QTcpSocket * sock = static_cast<QTcpSocket*>(this->sender());
if (key == 0)
{
    QString recv(sock->readLine());
    key = recv.toInt();
    qDebug() << "Cheia este " << key;

    char * response = enc_dec("#AUTH|admin|admin",strlen("#AUTH|admin|admin"),key);
    sock->write(response);
}
else
{
    busy = true;
    while (sock->bytesAvailable() > 0)
    {
        unsigned short word;
        sock->read((char*)(&word),2);
        qDebug()<<word;
        //Sleep(100); if i do this than it works great!
        QByteArray bts = sock->read(word);
        while (bts.length() < word)
        {
            char bit; //here get's stuck
            if (sock->read(&bit,1) > 0)
                bts.append(bit);
            sock->flush();
        }

        char * decodat = enc_dec((char*)bts.data(),bts.length() - 2,key);
        qDebug() << decodat;
    }

}

QObject::connect(this->m_TCPSocket, SIGNAL(readyRead()), this, SLOT(processRecivedDatagrams()));

// SLOT:


void Network::processRecivedDatagrams(void)
{
    if (!this->m_flagLocked) // use analog of mutex
    {
        this->m_flagLocked = true; // lock resource

    QByteArray datagram;
    do
    {
        datagram.resize(m_TCPSocket->pendingDatagramSize());
        m_TCPSocket->readDatagram(datagram.data(), datagram.size());
    }
            Qt::String YourString; // actualy I don`t remember how to declare Qt string
    while (m_TCPSocket->hasPendingDatagrams());
    QDataStream in (&datagram, QIODevice::ReadOnly);

        in  >> YourString



        --numberOfDatagrams;
    }

    this->m_flagLocked = false; // unlock resource
}