On 2017-10-02 14:23, stephan.ebel...@hs-anhalt.de wrote:
Dear Qt-list-members,
i got the following problem with Qt and i hope that you can help me:
When I write raw network bytes to a QDataStream object repeatedly, the
QDataStream never increases the write position of the underlying QByteArray.
Here's the code:
|QByteArray recvBuf; int bytePosition = 0; void init( ){ recvBuf =
QByteArray( 240 * 10, Qt::Uninitiliazed ); } void receiveAppend( ){
QByteArray buffer( 240, Qt::Uninitialized ); QDataStream datastream(
recvBuf, QIODevice::WriteOnly ); datastream.setByteOrder(
QDataStream::LittleEndian ); if( udpSocket->readDataGram( buffer.data(),
buffer.size(), &ip, &port ){ datastream.device().seek( bytePosition );
datastream.writeRawData( buffer.data(), buffer.size() ); bytePosition +=
240; } } |
Why is this happening?
The code works fine on Linux Mint 18 64Bit. But it's not working on
Windows 10 64Bit. I'm using Qt Creator 4.3.1 with Qt 5.9.1.
Maybe a stupid question, but you're sure you're receiving the same 240
network bytes in Win10 as you do in Mint? If you do a trace printout of
the buffer.size() in receiveAppend(), is it the same in both systems?
Maybe Win10's firewall is messing the program...
Rgrds Henry
_______________________________________________
Interest mailing list
Interest@qt-project.org
http://lists.qt-project.org/mailman/listinfo/interest
