f# - How to Async.AwaitTask on plain Task (not Task<T>)?

Question

I'm trying to consume a C# library in F#. The library makes heavy use of async/await. I want to use within an async { ... } workflow in F#.

I see we can Async.AwaitTask on async C# methods returning Task<T>, but what about those returning plain Task?

Perhaps, is there a helper to convert these to Async<unit> or to convert Task to Task<unit> so it will work with Async.AwaitTask?

Answer 1

You can use ContinueWith:

let awaitTask (t: Task) = t.ContinueWith (fun t -> ()) |> Async.AwaitTask

Or AwaitIAsyncResult with infinite timeout:

let awaitTask (t: Task) = t |> Async.AwaitIAsyncResult |> Async.Ignore