capture path/uri when connecting, and pass it back through callbacks in the openInfo member

ixwebsocket/IXWebSocketHandshake.h

@@ -26,16 +26,19 @@ namespace ix
         int http_status;
         std::string errorStr;
         WebSocketHttpHeaders headers;
+        std::string uri;
 
         WebSocketInitResult(bool s = false,
                             int status = 0,
                             const std::string& e = std::string(),
-                            WebSocketHttpHeaders h = WebSocketHttpHeaders())
+                            WebSocketHttpHeaders h = WebSocketHttpHeaders(),
+                            const std::string& u = std::string())
         {
             success = s;
             http_status = status;
             errorStr = e;
             headers = h;
+            uri = u;
         }
     };