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                合規國際互聯網加速 OSASE為企業客戶提供高速穩定SD-WAN國際加速解決方案。 廣告
                # swoole_server->getSocket 調用此方法可以得到底層的socket句柄,返回的對象為`sockets`資源句柄。 > 此方法需要依賴PHP的`sockets`擴展,并且編譯swoole時需要開啟`--enable-sockets`選項 使用`socket_set_option`函數可以設置更底層的一些socket參數。 ```php $socket = $server->getSocket(); if (!socket_set_option($socket, SOL_SOCKET, SO_REUSEADDR, 1)) { echo 'Unable to set option on socket: '. socket_strerror(socket_last_error()) . PHP_EOL; } ``` 監聽端口 ---- 使用`listen`方法增加的端口,可以使用`Swoole\Server\Port`對象提供的`getSocket`方法。 ```php $port = $server->listen('127.0.0.1', 9502, SWOOLE_SOCK_TCP); $socket = $port->getSocket(); ``` 支持組播 ---- 使用`socket_set_option`設置`MCAST_JOIN_GROUP`參數可以將Socket加入組播,監聽網絡組播數據包。 ```php $server = new swoole_server('0.0.0.0', 9905, SWOOLE_BASE, SWOOLE_SOCK_UDP); $server->set(['worker_num' => 1]); $socket = $server->getSocket(); $ret = socket_set_option( $socket, IPPROTO_IP, MCAST_JOIN_GROUP, array('group' => '224.10.20.30', 'interface' => 'eth0') ); if ($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(); ``` * `group` 表示組播地址 * `interface` 表示網絡接口的名稱,可以為數字或字符串,如`eth0`、`wlan0`
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