Simple Loadbalancer with NodeJS HTTPS -> HTTP(S) Servers

Here I use NodeJS with a combination of the module node-http-proxy
To loadbalance requests to several server listening to https oder http

When you have installed NPM like this

curl http://npmjs.org/install.sh | sh

then you can install node-http-proxy by:

npm install http-proxy

 Now you can use this file proxy.js:

	var fs = require('fs'),
	http = require('http'),
	https = require('https'),
	httpProxy = require('http-proxy');
	var options = {
	https: {
	key: fs.readFileSync('key.pem', 'utf8'),
	cert: fs.readFileSync('cert.pem', 'utf8')
	}
	};
	var addresses = [
	{
	host: '1.2.3.4',
	port: 3000
	},
	{
	host: '4.3.2.1',
	port: 3001
	}
	];
	// Next line is for HTTP targets
	//------------------
	var proxy = new httpProxy.HttpProxy();
	// When you have https targets (uncomment these and comment the above line for this)
	//------------------
	//var proxy = new httpProxy.HttpProxy({.
	// target: {
	// https: true
	// }
	//});
	https.createServer(options.https, function (req, res) {
	var target = addresses.shift();
	proxy.proxyRequest(req, res, target);
	addresses.push(target);
	}).listen(443, "1.2.3.4");

view raw proxy.js hosted with ❤ by GitHub

you can start the load-balancer like this:

node proxy.js