Kraken\Channel\Model\Zmq\ZmqModel::unicast PHP Method

    public function unicast($id, $message, $flags = self::MODE_STANDARD)
    {
        $status = $this->sendMessage($id, self::COMMAND_MESSAGE, $message, $flags);
        $this->emit('send', [$id, (array) $message]);
        return $status;
    }