api-proxy.js

var connect = require('connect'),
    httpProxy = require('http-proxy'),
    domain = process.env.DOMAIN,
    port = process.env.PORT || 3000;
var proxy = new httpProxy.RoutingProxy();

connect.createServer()
  .use('/api', function (req, res) {
    req.headers.host = domain;
    proxy.proxyRequest(req, res, { host: domain, port: 80 });
  })
  .use(connect.static(__dirname + '/public'))
  .listen(port, function () { console.log("Listening on " + port); });