Question

我有一个在yii2上工作的websocket应用程序。这是我的服务器端（使用https://github.com/consik/yii2-websocket）：

class ChatServer extends WebSocketServer
{
    public function init()
    {
        parent::init();

        $this->on(self::EVENT_CLIENT_CONNECTED, function(WSClientEvent $e) {

            $user = User::findById(\Yii::$app->user->identity->id);
            $e->client->id = $user->id;
        });
        $this->on(self::EVENT_CLIENT_DISCONNECTED, function(WSClientEvent $e){

        });
    }
    protected function getCommand(ConnectionInterface $from, $msg)
    {
        $request = json_decode($msg, true);
        return !empty($request['action']) ? $request['action'] : parent::getCommand($from, $msg);
    }
    public function commandChat(ConnectionInterface $client, $msg)
    {
        $request = json_decode($msg);
        $result = ['message' => ''];
        if (!isset($request->recipient_id) || !isset($request->message)) {
            $client->send(json_encode(['success' => false]));
        }

        $user = User::findById(\Yii::$app->user->identity->id);


        if (!$user->isFriend($request->recipient_id)) {
            $client->send(json_encode(['success' => false]));
        }

        $message = new Message();
        $message->sender_id = $user->id;
        $message->receiver_id = $request->receiver_id;
        $message->text = $request->message;

        if ($message->save())
        {
            $result['message'] = 'Sended.';
            foreach($this->clients as $chatClient) {
                if ($chatClient->id == $message->receiver_id) {
                    $chatClient->send( json_encode([
                        'type' => 'newMessage',
                        'message' => $message->text
                    ]) );
                }
            }
        }
        else {
            $result['message'] = 'Some error here.';
        }
        $client->send( json_encode($result) );
    }
}

这是我的客户方：

$(function() {
        var chat = new WebSocket('ws://localhost:8079/');

        chat.onopen = function(e) {
            console.log(e);
            console.log('connected!');
        };
        chat.onclose = function(event) {
          console.log('closed');
        };

        $('#btnSend').click(function() {
            if ($('#message').val()) {
                chat.send( JSON.stringify({'action' : 'chat', 'message' : $('#message').val()}) );
            } else {
                alert('Enter the message')
            }
        })
    });

但是当我打开这个页面时，我在控制台中得到了这个： connected! closed 当我尝试通过chat.send发送消息时，我得到了WebSocket is already in CLOSING or CLOSED state.。我该怎么办？为什么我的websocket关闭如此之快？

yii2上websockets的最佳决定是什么？

P.S。编辑我的js：

var chat = new WebSocket('ws://localhost:8080/');    
    chat._original_send_func = chat.send;
    chat.send = function(data) {
       if(this.readyState == 1) {
           this._original_send_func(data);
       }         
       else {
           console.log('No')
       }

       }.bind(chat);

当我尝试发送消息时，readyState不等于1.我不知道为什么。

Answer 1

根据我的经验，在连接客户端之后，SocketServer在函数init()中崩溃。这样做的一个原因是，如果您使用php-cli启动服务器，那么崩溃的原因将是行$user = User::findById(\Yii::$app->user->identity->id);，因为控制台应用程序没有用户身份组件，这会引发异常，从而关闭服务器

yii2 websocket在打开后立即关闭

1 个答案: