[fix minor] Correctly set x-forwarded-proto in WebSocket requests

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

@@ -131,28 +131,29 @@ HttpProxy.prototype.proxyRequest = function (req, res, buffer) {
   // * `x-forwarded-port`: Port of the original request.
   //
   if (this.enable.xforward && req.connection && req.socket) {
-
     if (req.headers['x-forwarded-for']){
       var addressToAppend = "," + req.connection.remoteAddress || req.socket.remoteAddress;
       req.headers['x-forwarded-for'] += addressToAppend;
-    } else {
+    } 
+    else {
       req.headers['x-forwarded-for'] = req.connection.remoteAddress || req.socket.remoteAddress;
     }
 
     if (req.headers['x-forwarded-port']){
       var portToAppend = "," + req.connection.remotePort || req.socket.remotePort;
       req.headers['x-forwarded-port'] += portToAppend;
-    } else {
+    } 
+    else {
       req.headers['x-forwarded-port'] = req.connection.remotePort || req.socket.remotePort;
     }
 
     if (req.headers['x-forwarded-proto']){
       var protoToAppend = "," + req.connection.pair ? 'https' : 'http';
       req.headers['x-forwarded-proto'] += protoToAppend;
-    } else {
+    } 
+    else {
       req.headers['x-forwarded-proto'] = req.connection.pair ? 'https' : 'http';
     }
-
   }
 
   //
@@ -420,28 +421,29 @@ HttpProxy.prototype.proxyWebSocketRequest = function (req, socket, head, buffer)
   // * `x-forwarded-port`: Port of the original request.
   //
   if (this.enable.xforward && req.connection && req.connection.socket) {
-
     if (req.headers['x-forwarded-for']){
       var addressToAppend = "," + req.connection.remoteAddress || req.connection.socket.remoteAddress;
       req.headers['x-forwarded-for'] += addressToAppend;
-    } else {
+    } 
+    else {
       req.headers['x-forwarded-for'] = req.connection.remoteAddress || req.connection.socket.remoteAddress;
     }
 
     if (req.headers['x-forwarded-port']){
       var portToAppend = "," + req.connection.remotePort || req.connection.socket.remotePort;
       req.headers['x-forwarded-port'] += portToAppend;
-    } else {
+    } 
+    else {
       req.headers['x-forwarded-port'] = req.connection.remotePort || req.connection.socket.remotePort;
     }
 
     if (req.headers['x-forwarded-proto']){
-        var protoToAppend = "," + req.connection.pair ? 'https' : 'http';
+      var protoToAppend = "," + req.connection.pair ? 'wss' : 'ws';
       req.headers['x-forwarded-proto'] += protoToAppend;
-    } else {
-        req.headers['x-forwarded-proto']   = req.connection.pair ? 'https' : 'http';
     } 
-
+    else {
+      req.headers['x-forwarded-proto'] = req.connection.pair ? 'wss' : 'ws';
+    }
   }
 
   //