CORS Proxy on node.js + express

server.js

var express = require('express'),
    request = require('request');

var app = express();  

// Forward all requests from /api to http://foo.com/api
app.use('/api', function(req, res) {
  req.pipe(request("http://foo.com/api" + req.url)).pipe(res);
});

app.listen(process.env.PORT || 3000);