reactphp/react socket server middleware

reactphp_middleware.php

<?php

define('CLIENT_PORT', 10000);
define('HOST','127.0.0.1');
define('SERVER_PORT', 10001);

gc_enable();

$loop = React\EventLoop\Factory::create();

$client = stream_socket_client('tcp://'.HOST.':'.CLIENT_PORT);
$conn2server = new React\Socket\Connection($client, $loop);
$middleware = new React\Socket\Server($loop);

$middleware->on('connection', function ($conn) use($conn2server,$loop) {
    $conn->once('data', function ($data) use ($conn2server) {
        $conn2server->write($data.PHP_EOL);
    });
    $conn2server->once('data', function($data) use ($conn) {
        $conn->write($data.PHP_EOL);
        if(rand(1,10) == 3){
            gc_collect_cycles();
        }
    });
});

$middleware->listen(SERVER_PORT);

$loop->run();