- support unix donain sockets and windows named pipes (socketPath) on…

… node 0.8.x. On node 0.6.x the support was opaque via port, but on the new node, socketPath should be set explicitely.

- avoid adding multiple headers with the same name
- fix bug in setting connection

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

@@ -212,13 +212,14 @@ HttpProxy.prototype.proxyRequest = function (req, res, buffer) {
   //
   // Setup outgoing proxy with relevant properties.
   //
-  outgoing.host     = this.target.host;
-  outgoing.hostname = this.target.hostname;
-  outgoing.port     = this.target.port;
-  outgoing.agent    = this.target.agent;
-  outgoing.method   = req.method;
-  outgoing.path     = req.url;
-  outgoing.headers  = req.headers;
+  outgoing.host       = this.target.host;
+  outgoing.hostname   = this.target.hostname;
+  outgoing.port       = this.target.port;
+  outgoing.socketPath = this.target.socketPath;
+  outgoing.agent      = this.target.agent;
+  outgoing.method     = req.method;
+  outgoing.path       = req.url;
+  outgoing.headers    = req.headers;
 
   //
   // If the changeOrigin option is specified, change the
@@ -237,7 +238,7 @@ HttpProxy.prototype.proxyRequest = function (req, res, buffer) {
     //
     // Process the `reverseProxy` `response` when it's received.
     //
-    if (response.headers.connection) {
+    if (!response.headers.connection) {
       if (req.headers.connection) { response.headers.connection = req.headers.connection }
       else { response.headers.connection = 'close' }
     }
@@ -281,7 +282,10 @@ HttpProxy.prototype.proxyRequest = function (req, res, buffer) {
     });
 
     // Set the headers of the client response
-    res.writeHead(response.statusCode, response.headers);
+    Object.keys(response.headers).forEach(function(key){
+      res.setHeader(key, response.headers[key]);
+    });
+    res.writeHead(response.statusCode);
 
     // If `response.statusCode === 304`: No 'data' event and no 'end'
     if (response.statusCode === 304) {

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

@@ -85,11 +85,12 @@ RoutingProxy.prototype.add = function (options) {
   //
   // TODO: Consume properties in `options` related to the `ProxyTable`.
   //
-  options.target       = options.target       || {};
-  options.target.host  = options.target.host  || options.host;
-  options.target.port  = options.target.port  || options.port;
-  options.target.https = this.target && this.target.https ||
-                         options.target && options.target.https;
+  options.target            = options.target       || {};
+  options.target.host       = options.target.host  || options.host;
+  options.target.port       = options.target.port  || options.port;
+  options.target.socketPath = options.target.socketPath || options.socketPath;
+  options.target.https      = this.target && this.target.https ||
+                              options.target && options.target.https;
 
   //
   // Setup options to pass-thru to the new `HttpProxy` instance