Node serving a chunked response

gistfile1.js

var http = require('http'),
    getNow = function() { return JSON.stringify({ time: (new Date()).getTime().toString() }) + '\n' };

http.createServer(function (request, response) {
    response.setHeader('Content-Type', 'application/json; charset=UTF-8');
    response.setHeader('Transfer-Encoding', 'chunked');

    console.log('start');
    response.write(getNow());

    var interval = setInterval(function() {
        var msg = getNow();
        console.log(msg);
        response.write(msg);
    }, 1000);

    setTimeout(function() {
        clearInterval(interval);
        var msg = getNow();
        console.log(msg);
        response.end(msg);
    }, 5000);
}).listen(3000);