node-http-proxy leaks file descriptors

Created by: jwalton

Run this:

http = require('http');
httpProxy = require('http-proxy');

proxy = httpProxy.createProxyServer();
server = http.createServer(function(req, res) {
    return proxy.web(req, res, {
      target: 'http://example.com'
    });
});

server.listen(9000);

• ps -ef | grep node to figure out the PID that's running it.
• watch 'lsof -p 5966 | wc -l' (replace 5966 with your pid)
• Point a browser at http://localhost:9000 (you'll get a 404 from example.com). I was using Chrome and FF.
• Hit CTRL-R over and over.
• Watch your open file count climb.

Sockets don't seem to close for 2 minutes. On OS/X, heavy traffic will run out of file descriptors very quickly (my product's Selenium test case kills node-http-proxy about 1/10th of the way through.)

Using node v0.10.25 and node-http-proxy 1.0.2.