node-proxy.js

var express = require('express');
var app = express();
var request = require('request');
var protocol = 'https';
var port = 5000;
var _ = require('lodash');
var path = require('path');
var proxyUrl = 'app.rnfrstqa.com';

var makeUrl = function(url){
  return protocol + '://' + path.join(proxyUrl, url);
};

var proxyMiddleware = function(req, res, next){
  req.url = makeUrl(req.url)
  req.headers.host = proxyUrl;
  req.pipe(request(_.pick(req, 'url', 'headers', 'body', 'method'))).pipe(res);
};

app.get('/*', proxyMiddleware);

var server = app.listen(port, function () {
  var host = server.address().address;
  if(host === '::') host = '0.0.0.0'
  var port = server.address().port;
  console.log('static-proxy listening at http://%s:%s', host, port);
});