Added support of automatic websocket tunneling, added test for it

lib/node-http-proxy.js

@@ -60,9 +60,17 @@ exports.createServer = function () {
     }
   });
 
+  // If callback is empty - tunnel websocket request automatically
+  if (!callback) {
     // WebSocket support
-  server.on('update', function() {
+    server.on('upgrade', function(req, socket, head) {
+      var proxy = new HttpProxy(req, socket, head);
+
+      // Tunnel websocket requests too
+      proxy.proxyWebSocketRequest(port, host);
+
     });
+  }
 
   return server;
 };

test/node-http-proxy-websocket-test.js

@@ -48,4 +48,7 @@ server.on('upgrade', function(req, socket, head) {
   p.proxyWebSocketRequest(8080, 'localhost');
 });
 
-server.listen(80);
+server.listen(8000);
+
+httpProxy.createServer(8080, 'localhost').listen(8001);
+