chunked_helloworld.js

var http = require( 'http' );

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

	response.write( 'Hello ' );

	setTimeout( function ()
	{
		response.end( ' world\n' );
	}, 5000);

} ).listen(3000);