QTcpServer with threaded clients problem

[Witek]

Hi.

I've writing TcpServer app in Qt and client in avr32 processor, but i got problem with server. My server should be multi-threaded, each of client on other thread. My problem is:

When I've connected newConnection() signal with this slot:

void CTcpServer::incomingConnection(int socketDescriptor)
{
    //IF there are still empty slots
    if(numOfClients < MAX_CLIENTS)
    {
        //Check which one is empty
        for(int i=0; i<MAX_CLIENTS; i++)
        {
            //Empty slot found
            if( 0 == clients[i])
            {
                //got socket
                clients[i] = new CTargetThread(socketDescriptor,this,socket);
                connect(clients[i], SIGNAL(finished()), clients[i], SLOT(deleteLater()));
                clients[i]->start();
              //Client counter indicate how much clients are connected to server
                numOfClients++;
                break;
            }
        }
    }
}

void CTcpServer::incomingConnection(int socketDescriptor)
{
    //IF there are still empty slots
    if(numOfClients < MAX_CLIENTS)
    {
        //Check which one is empty
        for(int i=0; i<MAX_CLIENTS; i++)
        {
            //Empty slot found
            if( 0 == clients[i])
            {
                //got socket
                clients[i] = new CTargetThread(socketDescriptor,this,socket);
                connect(clients[i], SIGNAL(finished()), clients[i], SLOT(deleteLater()));
                clients[i]->start();
              //Client counter indicate how much clients are connected to server
                numOfClients++;
                break;
            }
        }
    }
}

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it simply check is a client slot aviable and runs thread for connected client.
and there is CTargetThreads run method:

void CTargetThread::run()
{
    socket=new QTcpSocket();
    if (!socket->setSocketDescriptor(iSocketDescriptor)) {
        //emit error(tcpSocket.error());
        qDebug("setSocketDescriptor failed");
        return;
    }
    qDebug("Socket granted");
    while(1)
    {
        socket->write("Sample message");
        msleep(50);
    }
    socket->disconnectFromHost();
    socket->waitForDisconnected();
}

void CTargetThread::run()
{
    socket=new QTcpSocket();
    if (!socket->setSocketDescriptor(iSocketDescriptor)) {
        //emit error(tcpSocket.error());
        qDebug("setSocketDescriptor failed");
        return;
    }
    qDebug("Socket granted");
    while(1)
    {
        socket->write("Sample message");
        msleep(50);
    }
    socket->disconnectFromHost();
    socket->waitForDisconnected();
}

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And problem is:
my packet with "sample message" doesn't seems to be send, I use WireShark to look up for packets, and it does not shows that packet.

Thread is created normally, setSocketDescriptor returns false, so it success, and when i write something, it just not working.

When I write something on client(avr32) side, it can't be readed in thread, but i see in WireShark, that this packet have been sent.

please, help me

[Jonny174]

How you reading? Try: socket->write("Sample message\n");

[marcvanriet]

Thread is created normally, setSocketDescriptor returns false, so it success, and when i write something, it just not working.

From the Qt doc :

bool QAbstractSocket::setSocketDescriptor ( int socketDescriptor, SocketState socketState = ConnectedState, OpenMode openMode = ReadWrite )

Initializes QAbstractSocket with the native socket descriptor socketDescriptor. Returns true if socketDescriptor is accepted as a valid socket descriptor; otherwise returns false.

Regards,
Marc