gistfile1.php

<?php

require __DIR__.'/vendor/autoload.php';

$loop = React\EventLoop\Factory::create();
$socket = new React\Socket\Server($loop);

// Create a blob of data for testing
$data = '';
for ($i = 1; $i <= 8; $i++) $data .= $i.str_repeat("\0", 1022)."\n";
file_put_contents('data', $data);

$http = new React\Http\Server($socket);
$http->on('request', function (React\Http\Request $request, React\Http\Response $response) use ($loop) {
	$url = 'data';

	$readStream = fopen($url, 'r');
	stream_set_blocking($readStream, 0);

	$read = new React\Stream\Stream($readStream, $loop);

    $response->writeHead(200, array('Content-Type' => 'text/plain'));
    $read->pipe($response);
});

$socket->listen(1337);
$loop->run();