swoole怎么异步调用

$this->ws->set(     [         'worker_num' => 2,         'task_worker_num' => 2,     ] );   $this->ws->on("open", [$this, 'onOpen']); $this->ws->on("message", [$this, 'onMessage']); $this->ws->on("task", [$this, 'onTask']); $this->ws->on("finish", [$this, 'onFinish']); $this->ws->on("close", [$this, 'onClose']);   public function onOpen($ws, $request) {     var_dump($request->fd); }   public function onMessage($ws, $frame) {     echo "ser-push-message:{$frame->data}n";     $data = [         'task' => 1,         'fd' => $frame->fd,     ];     $ws->task($data);     $ws->push($frame->fd, "server-push:".date("Y-m-d H:i:s")); }   public function onTask($serv, $taskId, $workerId, $data) {     print_r($data);     // 耗时场景 10s     sleep(10);     return "on task finish"; // 告诉worker    }     public function onFinish($serv, $taskId, $data) {     echo "taskId:{$taskId}n";     echo "finish-data-sucess:{$data}n"; }

nbsp;html&gt;  <meta><meta><title></title><h1>chuangxiang--测试</h1> <script> var wsUrl = "ws://192.168.0.103:8812";   var websocket = new WebSocket(wsUrl);   //实例对象的onopen属性 websocket.onopen = function(evt) {     websocket.send("Hello chaungxiang");//输出到服务器端,即发送信息     console.log("connected-swoole-success");//输出在页面 }   //实例化 onmessage websocket.onmessage = function(evt) {     console.log("ws-server-return-data:"+evt.data); }   //实例化onclose websocket.onclose = function(evt) {     console.log("close"); }   //实例化onerror websocket.onerror =function(evt,e) {     console.log("error:"+evt.data); } </script>