[FIXED] How to stop a UdpClient?

Issue

I'm listening to a UDP socket by using an UdpClient:

UdpClient udpClient = new(new IPEndPoint(myLocalAddress, 12345));
udpClient.Receive();

Indeed, this blocks. Because of this, I moved this code in a separate Task.

On a change of the network, I will stop no longer needed UdpClients. For this, I use the NetworkChange.NetworkAddressChanged event.

How can I stop the listening of the UdpClients? The UdpClient.Receive method does not allow a CancellationToken.😗

I also tried to use a Socket directly by using Socket.Receive(datagram). But I can't stop this too.

Both ways do not stop, even the IP address is no longer present, because the network gone.

Solution

You can use the async version of receive (UdpClient.ReceiveAsync). This should accept a Cancellation token in .net 6 (but not in .net-core 3.1 and earlier)

Answered By - Jeanot Zubler

Answer Checked By - Pedro (PHPFixing Volunteer)