Simple NodeJS proxy server

server.js

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

//
// Create a proxy server with custom application logic
//
var proxy = httpProxy.createProxyServer({});

//
// Create your custom server and just call `proxy.web()` to proxy
// a web request to the target passed in the options
// also you can use `proxy.ws()` to proxy a websockets request
//
var server = require('http').createServer(function(req, res) {
  // You can define here your custom logic to handle the request
  // and then proxy the request.
  var targets = {
    'foo.bar.com': 'localhost:3001'
  }
  proxy.web(req, res, {
    xfwd: true,
    target: 'http://' + targets[req.headers.host] + ''
  });
});

console.log("Proxy listening on port 80")
server.listen(80);