[QUESTION] How to check API calls?

[pcdus]

Texte source
Hello,

On my mobile projects, I often use Charles Proxy to see the APIs interactions: this help me to see if some issues are coming from the app, or from the APIs.

I just come to recover a Xamarin.Forms project where Refit is used for all API calls: I don't see any trace in Charles Proxy.

Is it normal? Is there another way to "debug" API calls done with Refit?

[rdavisau]

If you don't see any simulator traffic from a Xamarin app using Charles, it's possible that the project is not using the native NSUrlSessionHandler. That might be due to the setting in the iOS .csproj (older templates used the managed handler by default I think), or because code in the project instantiates or otherwise causes the managed handler to be used for the refit calls. Some info at https://docs.microsoft.com/en-us/xamarin/cross-platform/macios/http-stack.

HttpClient and SSL/TLS Implementation Selector for iOS/macOS - Xamarin

The HttpClient stack and SSL/TLS implementation selector determines the HttpClient and SSL/TLS implementation that will be used by your Xamarin iOS, tvOS, or macOS app.