Fix mbedtls-3.0 problem (#322)

* Fix mbedtls-3.0 problem

This cause CI to fail on macOS.

See this migration guide => https://github.com/ARMmbed/mbedtls/blob/development/docs/3.0-migration-guide.md

* cmake change find header file

* define macro for mbedtls >= 3

* update api call

* Update IXWebSocketVersion.h

* Update CHANGELOG.md

ixwebsocket/IXNetSystem.cpp

@@ -278,4 +278,17 @@ namespace ix
 #endif
     }
 
+    // Convert network bytes to host bytes. Copied from the ASIO library
+    unsigned short network_to_host_short(unsigned short value)
+    {
+        #if defined(_WIN32)
+          unsigned char* value_p = reinterpret_cast<unsigned char*>(&value);
+          unsigned short result = (static_cast<unsigned short>(value_p[0]) << 8)
+            | static_cast<unsigned short>(value_p[1]);
+          return result;
+        #else // defined(_WIN32)
+          return ntohs(value);
+        #endif // defined(_WIN32)
+    }
+
 } // namespace ix

ixwebsocket/IXNetSystem.h

@@ -81,4 +81,6 @@ namespace ix
 
     const char* inet_ntop(int af, const void* src, char* dst, socklen_t size);
     int inet_pton(int af, const char* src, void* dst);
+
+    unsigned short network_to_host_short(unsigned short value);
 } // namespace ix

ixwebsocket/IXSocketServer.cpp

@@ -351,7 +351,7 @@ namespace ix
                     continue;
                 }
 
-                remotePort = client.sin_port;
+                remotePort = ix::network_to_host_short(client.sin_port);
                 remoteIp = remoteIp4;
             }
             else // AF_INET6
@@ -371,7 +371,7 @@ namespace ix
                     continue;
                 }
 
-                remotePort = client.sin_port;
+                remotePort = ix::network_to_host_short(client.sin_port);
                 remoteIp = remoteIp6;
             }