QTcpSocket QDataStream QByteArray

[Grimlock]

Hi.
I'm trying to send some data through a QTcpSocket using QDataStream and a QByteArray.

QByteArray data;
    //QDataStream stream(mySocket);
    data = mySocket->readAll();
    QString dataText = QString(data);

QByteArray data;
    //QDataStream stream(mySocket);
    data = mySocket->readAll();
    QString dataText = QString(data);

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Reading the data directly results in the string containing QVariant(QByteArray, "TEST")

QByteArray data;
    QDataStream stream(mySocket);
    stream >> data;
    QString dataText = QString(data);

QByteArray data;
    QDataStream stream(mySocket);
    stream >> data;
    QString dataText = QString(data);

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Using QDataStream gives me an empty String
Can anyone help me