[fix] spdy should look like https when forwarding (until we get a client)

Author: bmeck

lib/node-http-proxy.js

@@ -79,9 +79,9 @@ exports.createServer = function () {
       case 'number':   port = arg; break;
       case 'object':   options = arg || {}; break;
       case 'function': callback = arg; handlers.push(callback); break;
-    }
+    };
   });
-
+  
   //
   // Helper function to create intelligent error message(s)
   // for the very liberal arguments parsing performed by
@@ -90,35 +90,36 @@ exports.createServer = function () {
   function validArguments() {
     var conditions = {
       'port and host': function () {
-        return port && host;
+        return port && host; 
       },
       'options.target or options.router': function () {
-        return options && (options.router ||
+        return options && (options.router || 
           (options.target && options.target.host && options.target.port));
       },
       'or proxy handlers': function () {
         return handlers && handlers.length;
       }
-    };
-
+    }
+    
     var missing = Object.keys(conditions).filter(function (name) {
       return !conditions[name]();
     });
-
+    
     if (missing.length === 3) {
       message = 'Cannot proxy without ' + missing.join(', ');
       return false;
     }
-
+    
     return true;
-  }
-
+  } 
+  
   if (!validArguments()) {
     //
-    // If `host`, `port` and `options` are all not passed (with valid
+    // If `host`, `port` and `options` are all not passed (with valid 
     // options) then this server is improperly configured.
     //
     throw new Error(message);
+    return;
   }
 
   //
@@ -129,7 +130,7 @@ exports.createServer = function () {
   options.target      = options.target      || {};
   options.target.port = options.target.port || port;
   options.target.host = options.target.host || host;
-
+  
   if (options.target && options.target.host && options.target.port) {
     //
     // If an explicit `host` and `port` combination has been passed
@@ -147,31 +148,31 @@ exports.createServer = function () {
     // we have to assume that this is a "go-anywhere" Proxy (i.e. a `RoutingProxy`).
     //
     proxy = new RoutingProxy(options);
-
+    
     if (options.router) {
       //
-      // If a routing table has been supplied than we assume
+      // If a routing table has been supplied than we assume 
       // the user intends us to add the "proxy" middleware layer
-      // for them
+      // for them  
       //
       handlers.push(function (req, res) {
         proxy.proxyRequest(req, res);
       });
-
+      
       proxy.on('routes', function (routes) {
         server.emit('routes', routes);
       });
-    }
+    } 
   }
-
+  
   //
   // Create the `http[s].Server` instance which will use
   // an instance of `httpProxy.HttpProxy`.
   //
-  handler = handlers.length > 1
+  handler = handlers.length > 1 
     ? exports.stack(handlers, proxy)
     : function (req, res) { handlers[0](req, res, proxy) };
-
+  
   server  = options.https
     ? https.createServer(options.https, handler)
     : http.createServer(handler);
@@ -183,8 +184,8 @@ exports.createServer = function () {
   if (!callback) {
     //
     // If an explicit callback has not been supplied then
-    // automagically proxy the request using the `HttpProxy`
-    // instance we have created.
+    // automagically proxy the request using the `HttpProxy` 
+    // instance we have created. 
     //
     server.on('upgrade', function (req, socket, head) {
       proxy.proxyWebSocketRequest(req, socket, head);
@@ -221,7 +222,7 @@ exports.createServer = function () {
 //
 exports.buffer = function (obj) {
   var events = [],
-      onData,
+      onData, 
       onEnd;
 
   obj.on('data', onData = function (data, encoding) {
@@ -239,11 +240,11 @@ exports.buffer = function (obj) {
     },
     destroy: function () {
       this.end();
-      this.resume = function () {
-        console.error("Cannot resume buffer after destroying it.");
-      };
-
-      onData = onEnd = events = obj = null;
+     	this.resume = function () {
+     	  console.error("Cannot resume buffer after destroying it.");
+     	};
+     	
+     	onData = onEnd = events = obj = null;
     },
     resume: function () {
       this.end();
@@ -277,10 +278,10 @@ exports.setMaxSockets = function (value) {
 //
 // ### function stack (middlewares, proxy)
 // #### @middlewares {Array} Array of functions to stack.
-// #### @proxy {HttpProxy|RoutingProxy} Proxy instance to
+// #### @proxy {HttpProxy|RoutingProxy} Proxy instance to 
 // Iteratively build up a single handler to the `http.Server`
 // `request` event (i.e. `function (req, res)`) by wrapping
-// each middleware `layer` into a `child` middleware which
+// each middleware `layer` into a `child` middleware which 
 // is in invoked by the parent (i.e. predecessor in the Array).
 //
 // adapted from https://github.com/creationix/stack
@@ -294,17 +295,17 @@ exports.stack = function stack (middlewares, proxy) {
         if (err) {
           if (res._headerSent) {
             res.destroy();
-          }
+          } 
           else {
             res.statusCode = 500;
             res.setHeader('Content-Type', 'text/plain');
             res.end('Internal Server Error');
           }
-
+          
           console.error('Error in middleware(s): %s', err.stack);
           return;
         }
-
+        
         if (child) {
           child(req, res);
         }
@@ -343,29 +344,29 @@ exports._getAgent = function _getAgent (options) {
   if (!options || !options.host) {
     throw new Error('`options.host` is required to create an Agent.');
   }
-
+  
   if (!options.port) {
     options.port = options.https ? 443 : 80;
   }
 
   var Agent = options.https ? https.Agent : http.Agent,
       agent;
 
-  agent = new Agent({
-    host: options.host,
+  agent = new Agent({ 
+    host: options.host, 
     port: options.port
   });
 
   agent.maxSockets = options.maxSockets || maxSockets;
 
   return agent;
-};
+}
 
 //
 // ### function _getProtocol (options)
 // #### @options {Object} Options for the proxy target.
-// Returns the appropriate node.js core protocol module (i.e. `http` or `https`)
-// based on the `options` supplied.
+// Returns the appropriate node.js core protocol module (i.e. `http` or `https`) 
+// based on the `options` supplied. 
 //
 exports._getProtocol = function _getProtocol (options) {
   return options.https ? https : http;
@@ -381,7 +382,7 @@ exports._getProtocol = function _getProtocol (options) {
 //
 exports._getBase = function _getBase (options) {
   var result = function () {};
-
+  
   if (options.https && typeof options.https === 'object') {
     ['ca', 'cert', 'key'].forEach(function (key) {
       if (options.https[key]) {

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

@@ -115,6 +115,9 @@ util.inherits(HttpProxy, events.EventEmitter);
 // #### @res {ServerResponse} Outgoing HTTP Request to write proxied data to.
 // #### @buffer {Object} Result from `httpProxy.buffer(req)`
 //
+function getProto(req) {
+  return req.isSpdy ? 'https' : (req.connection.pair ? 'https' : 'http');
+}
 HttpProxy.prototype.proxyRequest = function (req, res, buffer) {
   var self = this,
       errState = false,
@@ -148,11 +151,11 @@ HttpProxy.prototype.proxyRequest = function (req, res, buffer) {
     }
 
     if (req.headers['x-forwarded-proto']){
-      var protoToAppend = "," + (req.connection.pair ? 'https' : 'http');
+      var protoToAppend = "," + getProto(req);
       req.headers['x-forwarded-proto'] += protoToAppend;
     }
     else {
-      req.headers['x-forwarded-proto'] = req.connection.pair ? 'https' : 'http';
+      req.headers['x-forwarded-proto'] = getProto(req);
     }
   }