[fix] Handle errors on request object

Sometimes a request emits `error` event with a `Parse Error`.

Author: mmalecki

lib/node-http-proxy/http-proxy.js

@@ -318,6 +318,11 @@ HttpProxy.prototype.proxyRequest = function (req, res, buffer) {
     socket.once('error', proxyError);
   });
 
+  //
+  // Handle 'error' events from the `req` (e.g. `Parse Error`).
+  //
+  req.on('error', proxyError);
+
   //
   // If `req` is aborted, we abort our `reverseProxy` request as well.
   //
@@ -731,6 +736,11 @@ HttpProxy.prototype.proxyWebSocketRequest = function (req, socket, head, buffer)
     socket.once('error', proxyError);
   });
 
+  //
+  // Handle 'error' events from the `req` (e.g. `Parse Error`).
+  //
+  req.on('error', proxyError);
+
   try {
     //
     // Attempt to write the upgrade-head to the reverseProxy