Udp send and receive problem

[Ginsengelf]

Hi, have you tried to temporarily disable the firewall completely?

Ginsengelf

[ruzgarin_oglu]

Hi, have you tried to temporarily disable the firewall completely?

Ginsengelf

Yes. I tried firewall. Still failing.

I think I solved the problem. I flushed the pointer after writing or reading the datagram to the socket object I created. Then I noticed that the error was resolved. I wonder why?

.
..
...
socket = new QUdpSocket(this);
 
socket->writeDatagram(......);
socket->flush(); < fix it

.
..
...
socket = new QUdpSocket(this);

socket->writeDatagram(......);
socket->flush(); < fix it

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[ChrisW67]

Without being able to see your code we can only guess. My guess is that your code does not return to the Qt event loop. To quote the docs, "In most cases, you do not need to call this function, because QAbstractSocket will start sending data automatically once control goes back to the event loop."