Simple NodeJS Proxy

proxy.js

//Use this script as proxy where you can specify custom headers 
//that will be sent to destination server

//TODO
//[X] Measure request time and write it to console
//[ ] Write measured request time to log file instead of console
//[ ] Make lookup list of possible custom headers to simulate different logins

var http = require('http');

var proxyServer = http.createServer(function(req, res) {

	var options = {
		hostname: 'localhost',
		port: 3000,
		path: req.url,
		method: req.method
	};

	//Specify additional custom 
	req.headers['customAuthToken'] = '<auth>Here is my token</auth>';

	options.headers = req.headers;

	var timeMeasurementLabel = 'Call: ' + options.method + ' ' + options.path;

	var proxyRequest = http.request(options, function(proxyResponse) {
		res.writeHead(proxyResponse.statusCode, proxyResponse.headers);
		proxyResponse.pipe(res);
		proxyResponse.on('end', function() {
			console.timeEnd(timeMeasurementLabel);
		})
	});

	proxyRequest.on('error', function(e) { console.log('error calling destination server' + e.message); });
	console.time(timeMeasurementLabel);
	proxyRequest.end();
});

proxyServer.listen(3001, function() {
	console.log('Proxy server setting on port 3001');
});

server.js

//Use this script to analyze headers and path that comes from proxy security server


var http = require('http');

var server = http.createServer(function(req, res) {
	console.log(req.url);
	console.log(req.headers);
	res.writeHead(200, {'customRespHeaders':'ThisIsFromDestinationService'})
	res.write('Are you here?');
	res.end();
});


server.listen(3000, function() {
	console.log('server listens on port 3000');
});