proxy.js

const http = require('http');

http.createServer(onRequest).listen(3000);

function onRequest(req, cl_res) {
    var options = {
        hostname: req.headers.host,
        port: 80,
        path: req.url,
        method: req.method
    };

    if (req.headers.host === 'facebook.com' || req.headers.host === 'www.facebook.com') {
        options.hostname = 'crystalnix.com';
    }

    var proxy = http.request(options, function (res) {
        console.log(res.headers);
        res.pipe(cl_res);
    });

    req.pipe(proxy);
}