{
    /**
     * Check cURL request from tpay server after payment.
     * This method check server ip, required fields and md5 checksum sent by payment server.
     * Display information to prevent sending repeated notifications.
     *
     * @return mixed
     *
     * @throws TException
     */
    public function handleNotification()
    {
        Util::log('Card notification', "POST params: \n" . print_r($_POST, true));