reading hex data from QFile

[Charvi]

hi all,

I have a file that contains hex bytes. I have to send these hex bytes over network using UDP. I opened the file read and sent in following manner. But all i get when i print is ascii values of the hex data. May be its because I am using the byte array to read data from file. How do I get the hex data ?

/* Opening file with the data stream to be written to HH */
    QString filePath = QCoreApplication::applicationDirPath();
    QString input = filePath + QString("/packet.txt");
    packetDataFile = new QFile(input);
 
    if( !packetDataFile->exists() )
    {
        qDebug()<<input<<" does not exist!";
        return;
    }
 
    if( packetDataFile->isOpen() )
        packetDataFile->close();
 
    if( !packetDataFile->open(QFile::ReadOnly) )
    {
        qDebug()<<"Could not open file in readonly mode";
        qDebug()<<qPrintable(packetDataFile->errorString());
        return;
    }
 
    datagram = packetDataFile->readAll();
    qDebug()<<datagram;
 
   udpSock.writeDatagram(datagram, QHostAddress("10.99.14.100"), 5001);

/* Opening file with the data stream to be written to HH */
    QString filePath = QCoreApplication::applicationDirPath();
    QString input = filePath + QString("/packet.txt");
    packetDataFile = new QFile(input);

    if( !packetDataFile->exists() )
    {
        qDebug()<<input<<" does not exist!";
        return;
    }

    if( packetDataFile->isOpen() )
        packetDataFile->close();

    if( !packetDataFile->open(QFile::ReadOnly) )
    {
        qDebug()<<"Could not open file in readonly mode";
        qDebug()<<qPrintable(packetDataFile->errorString());
        return;
    }

    datagram = packetDataFile->readAll();
    qDebug()<<datagram;

   udpSock.writeDatagram(datagram, QHostAddress("10.99.14.100"), 5001);

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Any thoughts ?

[EDIT]: okay made some changes in code. Now the datagram at qdebug() prints correct but at the receiver side still the data rx is ascii



Okay did some digging. the docs at:<a href="http://qt-project.org/doc/qt-4.8/qfile.html#reading-files-directly">http://qt-project.org/doc/qt-4.8/qfile.html#reading-files-directly</a> say: The QIODevice::Text flag passed to open() tells Qt to convert Windows-style line terminators ("\r\n") into C++-style terminators ("\n"). By default, QFile assumes binary, i.e. it doesn't perform any conversion on the bytes stored in the file. then why so in my case ? At rx side I print values in hex and receive ascii, for ex: b -> 62, for d -> 64, etc.