Bounce With Re-Writes

gistfile1.js

//Assume this structure storing routes and corresponding host and port
var routes = [ '/app1': { host: '127.0.0.1', port: 3000 },
               '/app2': { host: '127.0.0.1', port: 3010 },
               '/app3': { host: '127.0.0.1', port: 3020 } ];	

http_proxy(function (req, bounce) {
   var route = routes[req.url];

   if(typeof route === "object") {
      //Want to rewrite the url, remove '/app1' or basically the key in the array structure
      bounce(route.host, route.port);
   }
}).listen(80);

////
// Ex:
////
// Request: /app1/create
// Should be re-wrote to: /create