QTcpSocket never has data avaiable to read!

[sisco]

Hi there,

I'm having a problem with reading an incomming connection on my QTcpServer.

i create a QtcpServer object and connect the signal newconnection() to a custom made slot:

serv = new QTcpServer();
connect(serv, SIGNAL(newConnection()), this, SLOT(newsession()));
serv->listen(QHostAddress::Any, port);

serv = new QTcpServer();
connect(serv, SIGNAL(newConnection()), this, SLOT(newsession()));
serv->listen(QHostAddress::Any, port);

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then from the slot for each pending connection i create a thread to handle the incomming data:

void clienthandler::newsession()
{
    QThread *t;
    incomingslientsession *client;
    while(serv->hasPendingConnections()){
        t = new QThread();
        client = new incomingslientsession(&db, serv->nextPendingConnection()->socketDescriptor(), &mutex);
        connect(t, SIGNAL(started()), client, SLOT(dowork()));
        connect(t, SIGNAL(finished()), t, SLOT(deleteLater()));             // Delete thread after session is handeled
        client->moveToThread(t);
        t->start();
    }
}

void clienthandler::newsession()
{
    QThread *t;
    incomingslientsession *client;
    while(serv->hasPendingConnections()){
        t = new QThread();
        client = new incomingslientsession(&db, serv->nextPendingConnection()->socketDescriptor(), &mutex);
        connect(t, SIGNAL(started()), client, SLOT(dowork()));
        connect(t, SIGNAL(finished()), t, SLOT(deleteLater()));             // Delete thread after session is handeled
        client->moveToThread(t);
        t->start();
    }
}

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In the thread i create a new Qtcpsocket() and assign the given socketdescriptor. After that i try to read 20 bytes from the incomming stream (sending node sends 1000+ bytes)

QTcpSocket sock;
sock.setSocketDescriptor(socketdescriptor);
 
// Test code to read some bytes
int bytesRead = 0;
QByteArray buff;
while (bytesRead < 20)                                                  // First 20 bytes
bytesRead = sock.read(buff.data(), 20-bytesRead);
 
qDebug() << buff;

QTcpSocket sock;
sock.setSocketDescriptor(socketdescriptor);

// Test code to read some bytes
int bytesRead = 0;
QByteArray buff;
while (bytesRead < 20)                                                  // First 20 bytes
bytesRead = sock.read(buff.data(), 20-bytesRead);

qDebug() << buff;

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This is where the problem is, the socket never receives any bytes so this code gets stuck in an endless loop! i can see the data coming in when looking with wireshark and the socketdescriptor is also the right one.

Can anyone see the problem here?

Thanks,

Sisco