哪位大神能帮助一下。困扰新手几天了。如何二次请求，关闭第一个计数器

public static function onWorkerStart(Worker $businessWorker)
{
    // use think\worker\Application;
    // $app = new Application;
    // $app->initialize();// 内部通道发起倒计时
    $http_worker            = new Worker('http://127.0.0.1:8585');
    $http_worker->reusePort = true;
    $http_worker->onMessage = function (TcpConnection $connection, Request $request) {
        $data      = $request->get('data');
        $data      = json_decode($data, true);
        $count     = (int) $data['time'];
        $userid    = (int) $data['userid'];
        $roomid    = (int) $data['roomid'];
        $gameid    = (int) $data['gameid'];
        $sessionid = 'room' . $roomid . 'game' . $gameid . 'userid' . $userid;
        if ($count > 0) {
            $_SESSION[$sessionid] = Timer::add(1, function () use (&$count, &$userid, &$roomid, &$gameid, &$sessionid) {
                Gateway::sendToGroup('room' . $roomid . 'game' . $gameid, json_encode(array(
                    'type'       => 'countdown',
                    'requestuid' => $userid,
                    'roomid'     => $roomid,
                    'gameid'     => $gameid,
                    'time'       => $count,
                )));
                $count--;
                if ($count < 1) {
                    Timer::del($_SESSION[$sessionid]);
                }
            });
            return $connection->send('ok');
        } else {
            var_dump($connection);
            // Timer::del($_SESSION[$sessionid]);
        }
    };
    $http_worker->listen();
}

只开了一个进程。要实现MVC代码GET请求http://127.0.0.1:8585/。根据时间time如果为0就删除上一个计数器。但是删除不了。执行后感觉是个死循环，最后就502了。

哪位大神能帮助一下。困扰新手几天了