Can't cancel task in Asp.net core Action

Question

I am trying to cancel Task running in Asp.net Core Action. For that I am using this github sample. I can cancel task if running service in console, but if I run under IIS (or IIS Express) task is not canceling. I saw similar issue in other question. Based on it issue should be fixed already. I am using .Net core 2.1.

Furiya

Get clear what you mean with "cancel it"? Do you want to cancel the operation when the connection is lost (ie caller closed the connection or hit abort button in the browser)? Then pass HttpContext.RequestAborted to your async methods (its an cancellation token). If not how oyu intend user to cancel it? – Stockdale

I am aborting request from client using javascript or from WPF client calling Task.Cancel() and passing CancellationToken to service call – Furiya

Did you try the above? This is the way is supposed to work. It's an cancellation token – Stockdale

My issue is that HttpContext.RequestAborted.IsCancellationRequested is false, but action is aborted from client – Furiya

When I use Kestrel as server it is working, but when server is IIS it is not working – Furiya

Did you try if its still an issue with ASP.NET Core 2.1 in process hosting? blogs.msdn.microsoft.com/webdev/2018/02/28/… – Stockdale

I will try later – Furiya

Answer 1

As I know this is known issue and doesn't fixed yet. See more details on ANCM project page.

Rodie

I was hoping this is fixed after 2 years :) Thanks for response. – Furiya

Push MS team once more to be more productive :) – Rodie

Same issue here: #50110601 . I asked the MS team about it as well...tumbleweeds. – Amerson

:( we still need to fix this – Pending