node-http-proxy-example

gistfile1.js

var httpProxy = require('http-proxy'),
    httpOptions = {
	router: {
            'someservername'   : '127.0.0.1:3001',
            'otherservername'  : '127.0.0.1:3002',
    	    '/*'               : '127.0.0.1:3000'
  	}
    },
    httpProxyServer = httpProxy.createServer(httpOptions);

httpProxyServer.listen(80);