Question about QDataStream and its functions startTransaction and commitTransaction

Jc_Opc

Hi,
I found the following code in the example https://code.qt.io/cgit/qt/qtbase.git/tree/examples/network/fortuneclient/client.cpp?h=5.15,

...
connect(tcpSocket, &QIODevice::readyRead, this, &Client::readFortune);
...
void Client::readFortune()
{
    in.startTransaction();

    QString nextFortune;
    in >> nextFortune;

    if (!in.commitTransaction())
        return;

    if (nextFortune == currentFortune) {
        QTimer::singleShot(0, this, &Client::requestNewFortune);
        return;
    }

    currentFortune = nextFortune;
    statusLabel->setText(currentFortune);
    getFortuneButton->setEnabled(true);
}

The issue I am having is in.commitTransaction() always return false, the size of the tcpsocket buffer keeps increasing and nextFortune size is always 0.

Any help I really appreciate it.

Thanks

Christian Ehrlicher

So how do you send your data?