main.js

var http = require('http'),
    httpProxy = require('http-proxy'),
    proxy = httpProxy.createProxyServer({}),
    url = require('url');

http.createServer(function (req, res) {
    var hostname, pathname;

    if (!req.headers.host) {
        console.log('no host in headers', req.headers);
    } else {
        hostname = req.headers.host.split(":")[0];
    }
    pathname = url.parse(req.url).pathname;

    console.log('====================================');
    console.log('CONNECTION: ', new Date().toString());
    console.log('headers: ', req.headers);
    console.log('hostname: ', hostname);
    console.log('pathname: ', pathname);
    console.log('====================================');

    // TODO: pull ports from config
    switch (hostname) {
    case 'dev.server.ironbane.com':
        proxy.web(req, res, {
            target: 'http://localhost:5001'
        });
        break;
    case 'play.server.ironbane.com':
        proxy.web(req, res, {
            target: 'http://localhost:3100'
        });
        break;
    default:
        proxy.web(req, res, {
            target: 'http://localhost:3100'
        });
    }
}).listen(8080, function () {
    console.log('proxy listening on port 8080');
});

var exitHandler = function (options, err) {
    if (options.cleanup) {
        console.log('clean');
    }
    if (err) {
        console.log(err.stack);
    }
    if (options.exit) {
        process.exit();
    }
};

//do something when app is closing
process.on('exit', exitHandler.bind(null, {
    cleanup: true
}));

//catches ctrl+c event
process.on('SIGINT', exitHandler.bind(null, {
    exit: true
}));

//catches uncaught exceptions
process.on('uncaughtException', exitHandler.bind(null, {
    exit: false
}));