[PHP] php使用event扩展的io复用测试

Posted 2021-03-23 陶士涵的菜地

先要安装event扩展,这样才可以使用libevent的事件机制

pecl install event

测试代码

//连接重用
//创建资源流的上下文
$context=stream_context_create([
    \'socket\'=>[
        \'backlog\'=>2000
    ]]);
stream_context_set_option($context,\'socket\',\'so_reuseaddr\',1); //设置连接重用
//sock_set_option($this->server, SOL_SOCKET, SO_REUSEADDR, 1); //复用还处于 TIME_WAIT
$socket = stream_socket_server("tcp://0.0.0.0:8070", $errno, $errstr,STREAM_SERVER_BIND | STREAM_SERVER_LISTEN,$context);
stream_set_blocking($socket,false);//非阻塞
//绑定事件
$base=new EventBase();
//监听服务端的socket
$event=new  Event($base,$socket,Event::PERSIST |Event::READ | Event::WRITE,function ($socket)use(&$base){

    $client = stream_socket_accept($socket);
    //stream_set_blocking($client,false);//非阻塞
//        var_dump($client);
//        $content=\'21335435\';
//        $string="HTTP/1.1 200 OK\\r\\n";
//        $string.="Content-Type: text/html;charset=utf-8\\r\\n";
//        $string.="Content-Length: ".strlen($content)."\\r\\n\\r\\n";
//        fwrite($client,$string.$content);
//        fclose($client);

    //global $base;

    //var_dump($socket,$client);

    $base=new EventBase();
    //监听客户端socket
    $event=new  Event($base,$client,Event::PERSIST |Event::READ | Event::WRITE,function ($client){
        $msg=fread($client,65535);
//
//         if($msg){ //匹配请求头包含了keep-alive
//
//         }

        $content=\'hello world\';
        $string="HTTP/1.1 200 OK\\r\\n";
        $string.="Content-Type: text/html;charset=utf-8\\r\\n";
        $string.="Connection: keep-alive\\r\\n";
        $string.="Content-Length: ".strlen($content)."\\r\\n\\r\\n";
        fwrite($client,$string.$content);

        fclose($client);

 
        //当socket断开连接，删除事件

        $event->del();//删除事件


    });
    $event->add(); //加入事件监听
    $base->loop();

    //监视客户端
    //$event->del();//删除事件
});
$event->add(); //加入事件监听
var_dump($base->loop()); //调度挂起事件监听