Hi all, I've got a thread in an application (Linux, Qt 5.13.0) which just writes udp datagrams at a relatively high frequency (video streaming). Sometimes the QUdpSocket::writeDatagram function returns -1 and the socket error is "TemporaryError". Looking into the source code of the udp socket class, it seems like the actual reason is that the OS returns EAGAIN which means I need to try again.
The thread is a QThread running the default event loop. What's the best way to handle this? Right now I just made a dumb loop trying again and again with a short usleep inbetween until it finally ships the datagram. I tried using waitForBytesWritten when getting the temporary error before trying again, but that had no noticeable effect. Without a sleep, this spinning loop might have some several 100 retries before it is successful. Cheers, Ola
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