swoole 创建UDP服务器

<?php
// 创建Server对象，监听 127.0.0.1:9502端口，类型为SWOOLE_SOCK_UDP
$serv = new swoole_server('127.0.0.1', 9502, SWOOLE_PROCESS, SWOOLE_SOCK_UDP);

// 监听数据接收事件
$serv->on('Packet', function ($serv, $data, $clientInfo) {
    $serv->sendto($clientInfo['address'], $clientInfo['port'], 'Server ' . $data);
    var_dump($clientInfo);
});

// 启动服务器
$serv->start();

$ /usr/local/php/bin/php udp_server.php 

$ ps aux | grep php    
oosten   22944  0.0  2.2 314416 23220 pts/4    Sl+  10:49   0:00 /usr/local/php/bin/php udp_server.php
oosten   22945  0.0  0.4 240032  4084 pts/4    S+   10:49   0:00 /usr/local/php/bin/php udp_server.php
oosten   22947  0.0  0.7 244732  7148 pts/4    S+   10:49   0:00 /usr/local/php/bin/php udp_server.php

$ nc -u 127.0.0.1 9502 ###-u,使用udp传输协议
hello
Server hello

array(4) {
  ["server_socket"]=>
  int(3)
  ["server_port"]=>
  int(9502)
  ["address"]=>
  string(9) "127.0.0.1"
  ["port"]=>
  int(40635)
}

 kill 22944