<?php
$server = new swoole_server('0.0.0.0', 9905, SWOOLE_PROCESS, SWOOLE_SOCK_UDP);
$server->set(['worker_num' => 1]);
$socket = $server->getSocket();
$ret = socket_set_option($socket, IPPROTO_IP, MCAST_JOIN_GROUP, array('group' => '224.10.20.30', 'interface' => 0));
if ($ret === false) {
throw new RuntimeException('Unable to join multicast group');
}
$server->on('Packet', function (swoole_server $serv, $data, $addr) {
$serv->sendto($addr['address'], $addr['port'], "Swoole: {$data}");
var_dump($addr, strlen($data));
});
$server->start();
