Hello everyone,
I have a strange problem with my QUdpSocket. It is used inside a QThread for both sending and receiving of datagrams.
Most of the time this works. But there are situations when writeDatagrams does return the correct number of bytes sent but no datagram is recorded with Wireshark and no response is received. The network is a simple test network with two clients only one being a Windows machine the other an embedded device.
errorString() returns "Unknown error". I am really puzzled by the fact that no outgoing data is recorded by Wireshark.
At first I assumed an error on my side because this behaviour is related to one special datagram. But this datagram differs from the ones sent before only by one byte. And writeDatagram() is called.

Any hints on what might go wrong here?

Regards,
Oliver