<?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){ $data=bin2hex($data); echo($data); echo "\n"; echo(substr($data,-8,4)); $connection->send('get'); }; Worker::runAll();