Host HTTP and WS on the same port (#414)

* Quick hack to host HTTP and WS on the same port #373

* Quick hack to host HTTP and WS on the same port #373 - simplify code

* ran clang-format

Co-authored-by: En Shih <seanstone5923@gmail.com>
Co-authored-by: The Artful Bodger <TheArtfulBodger@users.noreply.github.com>

ixwebsocket/IXWebSocketHandshake.h

@@ -7,6 +7,7 @@
 #pragma once
 
 #include "IXCancellationRequest.h"
+#include "IXHttp.h"
 #include "IXSocket.h"
 #include "IXWebSocketHttpHeaders.h"
 #include "IXWebSocketInitResult.h"
@@ -35,7 +36,9 @@ namespace ix
                                             int port,
                                             int timeoutSecs);
 
-        WebSocketInitResult serverHandshake(int timeoutSecs, bool enablePerMessageDeflate);
+        WebSocketInitResult serverHandshake(int timeoutSecs,
+                                            bool enablePerMessageDeflate,
+                                            HttpRequestPtr request = nullptr);
 
     private:
         std::string genRandomString(const int len);