[fix] Dont use res.* in proxyWebSocketRequest

Author: indexzero

lib/node-http-proxy.js

@@ -636,8 +636,7 @@ HttpProxy.prototype.proxyWebSocketRequest = function (req, socket, head, options
     location = this.proxyTable.getProxyLocation(req);
 
     if (!location) {
-      res.writeHead(404);
-      return res.end();
+      return socket.destroy();
     }
 
     options.port = location.port;
@@ -786,6 +785,7 @@ HttpProxy.prototype.proxyWebSocketRequest = function (req, socket, head, options
     path: req.url,
     headers: req.headers,
   };
+  
   var reverseProxy = agent.appendMessage(outgoing);
 
   //