fix: add missing host argument to server spawn

fixes: pact-foundation#102

Author: bethesque

lib/pact/mock_service/server/spawn.rb

@@ -7,24 +7,24 @@ class Spawn
 
         class PortUnavailableError < StandardError; end
 
-        def self.call pidfile, port, ssl = false
+        def self.call pidfile, host, port, ssl = false
           if pidfile.can_start?
-            if port_available? port
+            if port_available? host, port
               pid = fork do
                 yield
               end
               pidfile.pid = pid
               Process.detach(pid)
-              Server::WaitForServerUp.(port, {ssl: ssl})
+              Server::WaitForServerUp.(host, port, {ssl: ssl})
               pidfile.write
             else
               raise PortUnavailableError.new("ERROR: Port #{port} already in use.")
             end
           end
         end
 
-        def self.port_available? port
-          server = TCPServer.new('127.0.0.1', port)
+        def self.port_available? host, port
+          server = TCPServer.new(host, port)
           true
         rescue
           false

lib/pact/mock_service/server/wait_for_server_up.rb

@@ -7,18 +7,18 @@ module MockService
     module Server
       class WaitForServerUp
 
-        def self.call(port, options = {ssl: false})
+        def self.call(host, port, options = {ssl: false})
           tries = 0
           responsive = false
-          while !(responsive = responsive?(port, options)) && tries < 100
+          while !(responsive = responsive?(host, port, options)) && tries < 100
             tries += 1
             sleep 1
           end
           raise "Timed out waiting for server to start up on port #{port}" if !responsive
         end
 
-        def self.responsive? port, options
-          http = Net::HTTP.new('localhost', port)
+        def self.responsive? host, port, options
+          http = Net::HTTP.new(host, port)
           if options[:ssl]
             http.use_ssl = true
             http.verify_mode = OpenSSL::SSL::VERIFY_NONE
@@ -27,7 +27,7 @@ def self.responsive? port, options
             scheme = 'http'
           end
           http.start {
-            request = Net::HTTP::Get.new "#{scheme}://localhost:#{port}/"
+            request = Net::HTTP::Get.new "#{scheme}://#{host}:#{port}/"
             request['X-Pact-Mock-Service'] = true
             response = http.request request
             response.code == '200'

spec/support/integration_spec_support.rb

@@ -35,7 +35,7 @@ def start_control port, options = ''
     end
 
     def wait_until_server_started port, ssl = false
-      Pact::MockService::Server::WaitForServerUp.(port, {ssl: ssl})
+      Pact::MockService::Server::WaitForServerUp.("localhost", port, {ssl: ssl})
     end
 
     def kill_server pid