Merge pull request #370 from jmatthewsr-ms/master

Fix for slab buffer retention, leading to large memory consumption

Author: indexzero

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

@@ -439,12 +439,15 @@ HttpProxy.prototype.proxyRequest = function (req, res, buffer) {
 // Performs a WebSocket proxy operation to the location specified by
 // `this.target`.
 //
-HttpProxy.prototype.proxyWebSocketRequest = function (req, socket, head, buffer) {
+HttpProxy.prototype.proxyWebSocketRequest = function (req, socket, upgradeHead, buffer) {
  var self = this,
  outgoing = new(this.target.base),
  listeners = {},
  errState = false,
- CRLF = '\r\n';
+ CRLF = '\r\n',
+ //copy upgradeHead to avoid retention of large slab buffers used in node core
+ head = new Buffer(upgradeHead.length);
+ upgradeHead.copy(head); 
 
  //
  // WebSocket requests must have the `GET` method and