QSslSocket::readyRead() signal is not raise after sending data ..

SGaist

You should take a look at the example provided in the QThread details documentation more specifically the one for the worker object implementation.

Ritchie

Hi,

I am already using the first way, shown in the examples.

But the documents says:

A QThread object manages one thread of control within the program. QThreads begin executing in run(). By default, run() starts the event loop by calling exec() and runs a Qt event loop inside the thread.

So, if I not execute the "Exec()" command, so far I understand, the QT Event Loop will not starts.

But within the examples, there is no using any "exec()".

It says for the first sample:

The code inside the Worker's slot would then execute in a separate thread. However, you are free to connect the Worker's slots to any signal, from any object, in any thread. It is safe to connect signals and slots across different threads, thanks to a mechanism called queued connections.

So in this case, no "exec()" is needed in the separate thread to execute ?

And for the second sample it says

In that example, the thread will exit after the run function has returned. There will not be any event loop running in the thread unless you call exec().

Best regards
R.

Pablo J. Rogina

@Ritchie I'm assuming your "program" is a client connecting securely to a server, because you're using

m_sslSocket->write(*block);
m_sslSocket->flush();

so I don't getting why you're expecting a readyRead() signal, since that will happen when you are reading data, not writing it. From Qt's documentation:

void QIODevice::readyRead()

This signal is emitted once every time new data is available for reading from the device's current read channel.

Am I missing something? If so my apologies right now...

Ritchie

@Pablo-J-Rogina
You are right, the

void QIODevice::readyRead()

is only emitted after receiving bytes from the server.
And after sending data's from the client to the server, the server will answer.

Like "Data stored" correct or "Data not stored"

Best regards
R.

Ritchie

Hi to all,

I solved my problem by the following way.

The function "DoWork" was change in the follwing way. Now it calls the QThread::exec() function.
The loop function is done by a timer event.

void DataThread::doWork(void)
{
    ProgramInfo->writelog(QObject::tr("carclient"),QObject::tr("DataThread"),QObject::tr("Info"),QObject::tr("Thread startup"));

    if (! m_sslSocket->supportsSsl())
        {
        ProgramInfo->writelog(QObject::tr("carclient"),QObject::tr("DataThread"),QObject::tr("Failure"),QObject::tr("No support fpr SSL connection!"));
        }

    m_WorkTimer = new QTimer();
    connect(m_WorkTimer, SIGNAL(timeout()), this, SLOT(DoTimerWork()));
    m_WorkTimer->start(50);

    QThread::exec();

    m_WorkTimer->stop();  // will delete later

   if( m_StateMachineState != NoConnection )
    {
    m_sslSocket->close();
    m_sslSocket->disconnectFromHost();
    }
    emit    WorkFinished();
}

Within the function "DoTimerWork", I do the cyclic stuff and do not block the events anymore

void    DataThread::DoTimerWork(void)
{
    if( SensorQueryBuffer->Size() > 0 )
        {
        if ( ! SensorQueryBuffer->locked() )
            {
            if (m_sslSocket->state() != QTcpSocket::ConnectedState)
                {
                if( m_StateMachineState == NoConnection )
                    {
                    m_StateMachineState=TryToConnect;
                    m_sslSocket->connectToHostEncrypted(m_ServerTCPIPAddress, m_ServerTCPIPPort);
                    }
                }
            }
        }
}

Thanks to all try to help me.

Best regards
R.