Express.js Embedded Forward Proxy

app.js

var express = require("express"),
    httpProxy = require("http-proxy"),
    proxy = new httpProxy.RoutingProxy();

var app = module.exports = express();

app.get("/", function(req, res, next) {
  res.send("This is the index");
});

app.use(function(req, res, next) {
  // Are we connecting to the api?
  if (req.url.indexOf("/api") === 0) {

    // Remove the /api in the path
    req.url = req.url.replace("/api", "");

    // replace the host or your network will freak out
    req.headers.host = "www.google.com";

    // proxy the bad boy
    return proxy.proxyRequest(req, res, {
      port: 80,
      host: 'google.com',
      https: true
    });
  }
  next();
});