fix(csharp): Fix bug where a lambda for sending HTTP requests would use the HTTP request from the outer scope instead of the local scope

fern/pages/changelogs/cli/2025-03-02.mdx

@@ -1,6 +1,6 @@
 ## 0.56.0-rc4
-**`(feat):`** If experimental.openapi-parser-v3 is enabled in docs.yml, OpenAPI documents will now be 
-converted directly to IR, bypassing the intermediate Fern Definition step. 
+**`(feat):`** If experimental.openapi-parser-v3 is enabled in docs.yml, OpenAPI documents will now be
+converted directly to IR, bypassing the intermediate Fern Definition step.
 
 This makes sure that the old code path is completely ignored if the flag is enabled.
 

fern/pages/changelogs/cli/2025-03-03.mdx

@@ -1,6 +1,6 @@
 ## 0.56.0-rc5
-**`(fix):`** Fixed duplicate validation messages in docs validation by deduplicating violations 
-that have the same message, node path, file path, and severity. 
+**`(fix):`** Fixed duplicate validation messages in docs validation by deduplicating violations
+that have the same message, node path, file path, and severity.
 
 This prevents showing the same broken link error multiple times.
 

generators/csharp/sdk/src/endpoint/http/HttpEndpointGenerator.ts

@@ -626,7 +626,7 @@ export class HttpEndpointGenerator extends AbstractEndpointGenerator {
         writer.writeNodeStatement(
             csharp.codeblock((writer) => {
                 writer.write(
-                    `var ${SEND_REQUEST_LAMBDA_VARIABLE_NAME} = async (HttpRequestMessage request, CancellationToken ${cancellationTokenName}) => {`
+                    `var ${SEND_REQUEST_LAMBDA_VARIABLE_NAME} = async (HttpRequestMessage ${HTTP_REQUEST_VARIABLE_NAME}, CancellationToken ${cancellationTokenName}) => {`
                 );
                 writer.indent();
                 writer.write(`var ${RESPONSE_VARIABLE_NAME} = `);

generators/csharp/sdk/versions.yml

@@ -7,6 +7,13 @@
 #         Set `enable-forward-compatible-enums` to `false` in the configuration to generate the old enums.
 #   irVersion: 53
 
+- version: 1.12.0-rc6
+  createdAt: "2025-03-03"
+  irVersion: 56
+  changelogEntry:
+    - type: fix
+      summary: Fix bug where a lambda for sending HTTP requests would use the HTTP request from the outer scope instead of the local scope.
+
 - version: 1.12.0-rc5
   createdAt: "2025-03-03"
   irVersion: 56