How to create a UDP server with swoole (code example)

The content of this article is about the method (code example) of swoole to create a UDP server. It has certain reference value. Friends in need can refer to it. I hope it will be helpful to you. help.

udp_server.php

<?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(&#39;127.0.0.1&#39;, 9502, SWOOLE_PROCESS, SWOOLE_SOCK_UDP);

// 监听数据接收事件
$serv->on(&#39;Packet&#39;, function ($serv, $data, $clientInfo) {
    $serv->sendto($clientInfo[&#39;address&#39;], $clientInfo[&#39;port&#39;], &#39;Server &#39; . $data);
    var_dump($clientInfo);
});

// 启动服务器
$serv->start();

The UDP server has no concept of connection. After startup, the client does not need to connect and can directly send data packets to the port monitored by the server. $clientInfo is client-related information

1. Start the service

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

2. After successful startup, check netstat

$ 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

3.nc connect to the server

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

4. After the client sends the data packet, the server prints the $clientInfo data

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

5. End the process

 kill 22944

The above is the detailed content of How to create a UDP server with swoole (code example). For more information, please follow other related articles on the PHP Chinese website!