WinRt: Suspend and Resume - when should I release my resources and allocate it again?

Question

My WinRt app implements a simple HttpServer. That server gets started when the app starts and should be terminated when the app ends. The HttpServer receives some callbacks from an other remote third party component. I need to register und unregister my HttpServer at the third party component.

My problem here is the Application lifecycle of an WinRt App especially the situation suspend -> resume (without Terminated or ClosedByUser).

In that situation the "OnSuspending" method is called while suspending, but nothing gets called when resuming.

In my App I unregister the HttpServer from the third party component during "OnSuspending". The question is what gets called so I can reregister my HttppServer at the third party?

Any help is much appreciated!

Answer 1

There is a Resume event, define it in your App.xaml.cs constructor

public App()
    {
        InitializeComponent();

        Suspending += OnSuspending;
        this.Resuming += On_resuming;
    }

And write your Resume event

private async void On_resuming(object sender, object e)
{

}

Hope it helps