public function websocket()
    {
        $this->writeln('Starting swoole websocket server...');

        $ws = new WebsocketServer(
            $this->swooleConfig['ws']['host'] ?? self::DEFAULT_SWOOLE_HOST,
            $this->swooleConfig['ws']['port'] ?? self::DEFAULT_SWOOLE_PORT
        );

        $ws->on(
            'open', function ($ws, $request) {
                $this->writeln('client-Connect.');
            }
        );

        $ws->on(
            'message', function ($ws, $frame) {
                $jsonData = JsonHelper::decode($frame->data);
                if (isset($jsonData['handler'])) {
                    $jsonData['swoole_frame'] = $frame;
                    $handlerClass = $jsonData['handler'];
                    try {
                        $ws->push(
                            $frame->fd,
                            Lb::app()->dispatchJob($handlerClass, $jsonData)
                        );
                    } catch (\Throwable $e) {
                        $ws->push(
                            $frame->fd,
                            'Exception:' . $e->getTraceAsString()
                        );
                    }
                } else {
                    $ws->push(
                        $frame->fd,
                        'Handler not exists'
                    );
                }
            }
        );

        $ws->on(
            'close', function ($ws, $fd) {
                $this->writeln('client-closed');
            }
        );

        $ws->start();
    }