Reverse Proxy

rexproxy.js

// This could probably be accomplished with the basic http module, but I was lazy & leaned on Express
var request = require('request'),
    express = require('express');

var proxy = express();

var apps = {
  app1 : 'http://10.10.10.10:8000',
  app2 : 'http://10.10.10.10:8001',
  app3 : 'http://10.10.10.10:8002'
};

proxy.use(function(req, res, next) {
  var parts = req.url.split('/'),
      app = parts[1] || false;
  parts.splice(0, 2);
  var url = (apps[app]) ? apps[app]+'/'+parts.join('/') : false;
  // requests sent to "http://this.host/app1" are redirected to "http://this.host/app1/"
  if (!parts.length)
    res.redirect(req.originalUrl+'/');
  // requests sent to "http://this.host/app1/" are proxied to "http://10.10.10.10:8000"
  else if (url)
    req.pipe(request(url)).pipe(res);
  // requests for which there is no app in the table are 404'd
  else
    res.send(404, 'No app specified');
});

proxy.listen(80);

console.log('listening on :80');