Merge pull request #40 from runk/auth

Authentication support

Author: runk

lib/proxy.js

@@ -87,10 +87,17 @@ exports.httpHandler = function(req, res) {
     dest = schema + '://' + req.headers['host'] + path;
 
   var params = {
-    url: dest,
-    rejectUnauthorized: false
+    headers: {},
+    rejectUnauthorized: false,
+    url: dest
   };
 
+  // Carry following headers down to dest npm repository.
+  var carryHeaders = ['authorization', 'version', 'referer', 'npm-session', 'user-agent'];
+  carryHeaders.forEach(function(name) {
+    params.headers[name] = req.headers[name];
+  });
+
   if (exports.opts.proxy)
     params.proxy = exports.opts.proxy;