Thruway\Role\Subscriber::subscribe PHP Метод

    public function subscribe(ClientSession $session, $topicName, callable $callback, $options = null)
    {
        $requestId = Utils::getUniqueId();
        $options = $options ? (object) $options : (object) [];
        $deferred = new Deferred();
        $subscription = ["topic_name" => $topicName, "callback" => $callback, "request_id" => $requestId, "options" => $options, "deferred" => $deferred];
        array_push($this->subscriptions, $subscription);
        $subscribeMsg = new SubscribeMessage($requestId, $options, $topicName);
        $session->sendMessage($subscribeMsg);
        return $deferred->promise();
    }