[Sid]

void WorldSocket::slotRead()
{
    sLog.outDebug("Read client data...");

    // For debug
    sLog.outTrace(QString("Current thread: 0x%0").arg(QString::number(qint32(QThread::currentThreadId()), 16).toUpper()));

    if (bytesAvailable() < 6)
    {
        sLog.outError("Packet haven't header!");
        return;
    }

    _buffer.clear();
    _buffer = readAll();

    // Parse header
    ClientPacketHeader header;

    QBuffer buf(&_buffer);
    buf.open(QIODevice::ReadOnly);
    buf.read((char*)&header, sizeof(ClientPacketHeader));

    m_Crypt.DecryptRecv((quint8*)&header, sizeof(ClientPacketHeader));

    header.size = qbswap(header.size);

    quint16 remaining = header.size - 4;

    if (remaining)
    {
        if (_buffer.size() < remaining)
        {
            sLog.outError("Packet not full!");
            return;
        }
    }

    sLog.outWarn(QString("HEADER: Opcode = %0, Remaining Size = %1").arg(header.cmd).arg(remaining));

    WorldPacket* rPacket;
    rPacket = new WorldPacket(header.cmd);

    if(!remaining)
        sLog.outDebug("Empty packet...");
    else
        rPacket->setData(_buffer.right(remaining));

    switch (rPacket->getOpcode())
    {
        case Opcodes::CMSG_AUTH_SESSION:
            handleAuthSession(*rPacket);
            break;
        case Opcodes::CMSG_PING:
            handlePing(*rPacket);
            break;
        default:
            if (m_session)
            {
                emit signalPacketReceived(rPacket);
            }
            else
            {
                sLog.outError(QString("Opcode %0 (%1) received without session!")
                    .arg(sOpcodes.nameByValue(rPacket->getOpcode()))
                    .arg(rPacket->getOpcode()));
                delete rPacket;
            }
            break;
    }
}

Слот вызывается по получению сигнала readyRead(), вызов которого от меня толком не зависит.