Proxy requests between two node.js applications using node-http-proxy

server.js

var httpProxy = require('http-proxy');
var fs = require('fs');
var options = {
  router : {
    'localhost/api': '127.0.0.1:3030/api',
    //default route
    'localhost/.*': '127.0.0.1:3031'
  }
};
var router = new httpProxy.RoutingProxy(options);
var proxy = httpProxy.createServer(function(req,res) {
    console.log("request: " + req.url + "; method: " + req.method);
    //fs.appendFile('./logs/access_log.txt', "request: " + req.url + "; method: " + req.method); //storing to file
    router.proxyRequest(req,res);
});
proxy.listen(3001, function() { console.log("Routing proxy listening on " + proxy.address().port); });