- 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

@@ -215,6 +215,7 @@ HttpProxy.prototype.proxyRequest = function (req, res, buffer) {
   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;
@@ -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

@@ -88,6 +88,7 @@ RoutingProxy.prototype.add = function (options) {
   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;