<?php use Workerman\Worker; use Workerman\Connection\TcpConnection; use Workerman\Protocols\Http\Request; require_once __DIR__ . '/vendor/autoload.php'; $udp_worker = new Worker('udp://0.0.0.0:53'); $udp_worker->onMessage = function($connection, $data){ echo(bin2hex($data)); $connection->send('get'); }; Worker::runAll();