server.js

require('http').createServer(function(req, res) {
        console.error('Request', req.headers);

        req.on('data', function(chunk) {
                console.error('Received chunk', chunk, chunk.toString());
        });

        setTimeout(function() {
                var body = "Hello World\n";

                res.writeHead(200, {
                        'Content-Type': 'text/plain',
                        'Content-Length': '' + body.length
                });
                res.end(body);
        }, 500);
}).listen(8001);