ShellStream.EndExpect continues to wait for a match until the timeout is reached

I am using the published stable Renci SSH.NET nuget package (2016.1.0)

I am successfully using ShellStreams BeginExpect method to wait asynchronously for one of several patterns to match until a timeout is reached. Additionally, I would like to be able to cancel the expect at any time arbitrarily.

I had hoped EndExpect would immediately stop the expect thread, but instead the behaviour appears to be that EndExpect blocks until a match is found.

I have tried setting the AsyncResult as completed using SetAsCompleted before calling EndExpect to bypass this behaviour, but the thread will continue to search for matches in the background until it eventually calls SetAsCompleted itself and throws an exception (InvalidOperationException - You can set a result only once).

I would like to propose a CancelExpect method that quickly sets the AsyncResult as cancelled and causes the expect thread to quickly exit.

I'm very happy to implement this feature myself, I would just like to know if there is already a better approach for what I am trying to do, and which branch I should be basing my work on.

まず ShellStream.BeginExpect と EndExpect を追跡して、expect 操作と AsyncResult がどのように完了するかを理解します。結果を二重に完了させずに expect を速やかに停止できるよう、キャンセルの動作を定義し、キャンセルと既存の timeout または match の経路をカバーするテストを追加します。キャンセルが速やかに戻り、バックグラウンドの expect 処理が正常に終了すれば完了です。