QT an QTcpSocket

[boroowa]

Hi!
I have very important question. I have used QT to programming very simple TCP server - I want that client gets two variables: x and y and send it to server ant it should sum them and return this sum to client. My code is very similar to Threated Fortune Server & Fortune Client. However, I change method "run" in fortunethread.h to

@
...

void FortuneThread::run()
{
//emit msgSignal(QString::number(socketDescriptor));
readFromSocket();
}

void FortuneThread::readFromSocket()
{
//QString numbers;

    QTcpSocket tcpSocket;

    if (!tcpSocket.setSocketDescriptor(socketDescriptor)) {
     emit error(tcpSocket.error());
     return;
 }


     if(tcpSocket.isReadable()) //(1)
     {
            QDataStream in(&tcpSocket);
            in.setVersion(QDataStream::Qt_4_0);

            QString numbers;

            QByteArray arr;

            in >> arr;

            QString k (arr.data());

--
//this signal opened QMessageBox with message in parameter
emit msgSignal("Deskryptor: " + QString::number(socketDescriptor) + "\nDane: " + k);
}
else
{
emit msgSignal("asdfghjklasdfghjkl");
}

    tcpSocket.disconnectFromHost();
    tcpSocket.waitForDisconnected();

}

...

@

and cliend should send data to server (after press getFortuneButton):

@
void Client::writeToSocket(){

            tcpSocket->connectToHost(hostLineEdit->text(),
                                                             portLineEdit->text().toInt());        

            QString num = (x + " " + y);
            QByteArray tab = num.toAscii();

            // QMessageBox b;
            // b.setText(x + " + " + y);
            // b.exec();

            tcpSocket->write(tab);
            tcpSocket->disconnectFromHost();
            tcpSocket->close();

}

@

Why it isn't work?? Thanks for help :D

[VanDerSam]

QTcpSocket has asynchronious model of work. Send data after connection will be established.