Swoole - 安装

Swoole 笔记

安装

GitHub Swoole

Step1: 下载最新的源码, 解压

Step2: 切换到源码目录, 执行 phpize

Step3: 切换到源码目录, 执行 ./configure

Step4: 切换到源码目录, 执行 make

Step5: 切换到源码目录, 执行 sudo make install

Step6: 修改 php.ini 文件, 文件尾部追加 extension=swoole

Hello World

服务端

新建 websocket_server_start.php, 内容如下

//创建WebSocket Server对象，监听0.0.0.0:9502端口
$ws = new Swoole\WebSocket\Server('0.0.0.0', 9502);

//监听WebSocket连接打开事件
$ws->on('Open', function ($ws, $request) {
    $ws->push($request->fd, "hello, welcome\n");
});

//监听WebSocket消息事件
$ws->on('Message', function ($ws, $frame) {
    echo "Message: {$frame->data}\n";
    $ws->push($frame->fd, "server: {$frame->data}");
});

//监听WebSocket连接关闭事件
$ws->on('Close', function ($ws, $fd) {
    echo "client-{$fd} is closed\n";
});

$ws->start();

使用命令 php websocket_server_start.php 启动服务

客户端(JS)

//连接服务器
ws = new WebSocket("ws://192.168.75.130:9502");
ws.onopen = function(event){
    console.log(event);
};
ws.onmessage = function (event) {
    console.log(event);
    var msg = "<p>"+event.data+"</p>";
    $("#msgArea").append(msg);
}
ws.onclose = function(event){alert("已经与服务器断开连接\r\n当前连接状态："+this.readyState);};

ws.onerror = function(event){console.log("WebSocket异常！");};

多人聊天室

服务端

通过 $server->connections 获取所有websocket连接用户的fd，进而实现群发功能

foreach ($server->connections as $fd) {
    // 需要先判断是否是正确的websocket连接，否则有可能会push失败
    if ($server->isEstablished($fd)) {
        $server->push($fd, $request->get['message']);
    }
}

客户端