C#•6mo ago

Unable to cancel async operation using CancellationToken

Hey all, I have a piece of code which attempts to cancel a UDP Recieve call after 5 seconds

3 Replies

Asher•6mo ago

This is the code particularly:

                    CancellationTokenSource cts = new CancellationTokenSource();

                    ValueTask<int> numBytesReceived = sock.ReceiveAsync(res, SocketFlags.None, cts.Token);
                    cts.CancelAfter(5000);
                    await numBytesReceived;
                    Array.Resize(ref res, numBytesReceived.Result);

                    CancellationTokenSource cts = new CancellationTokenSource();

                    ValueTask<int> numBytesReceived = sock.ReceiveAsync(res, SocketFlags.None, cts.Token);
                    cts.CancelAfter(5000);
                    await numBytesReceived;
                    Array.Resize(ref res, numBytesReceived.Result);

I am really going crazy trying to cancel this operation if a result is not recieved within 5 seconds, does anyone know why I'm unable to stop this operation?

x0rld•6mo ago

https://stackoverflow.com/questions/25683980/timeout-pattern-on-task-based-asynchronous-method-in-c-sharp#26006041 there is some response here for the same questions

Stack Overflow

Timeout pattern on task-based asynchronous method in C#

As far as I know, there're two possible patterns to implement a timeout to task-based asynchronous methods: Built-in timeout public Task DoStuffAsync(TimeSpan timeout) This approach is harder to

Asher•6mo ago

@xtreit tried this approach, it seems to still hang for some reason, the RecieveAsync itself just completely (but asynchronously) hangs everything

Gaming

Programming

Unable to cancel async operation using CancellationToken