[fix] fix the correct order of arguments in ws-incoming passes

Author: cronopio

lib/http-proxy/passes/ws-incoming.js

@@ -96,22 +96,21 @@ var passes = exports;
    *
    * @api private
    */
-  function stream(req, socket, server, head, clb) {
+  function stream(req, socket, options, server, head, clb) {
     common.setupSocket(socket);
 
     if (head && head.length) socket.unshift(head);
 
 
-    var proxyReq = (~['https:', 'wss:'].indexOf(server.options.target.protocol) ? https : http).request(
-      common.setupOutgoing(server.options.ssl || {}, server.options, req)
+    var proxyReq = (~['https:', 'wss:'].indexOf(options.target.protocol) ? https : http).request(
+      common.setupOutgoing(options.ssl || {}, options, req)
     );
     // Error Handler
     proxyReq.on('error', function(err){
-      if(server) {
-        server.emit('error', err);
-      } 
-      else {
+      if (clb) {
         clb(err);
+      } else {
+        server.emit('error', err, req, res);
       }
     });