User-Agent

[KoalaBear84]

Since yesterday ~ UTC 10:00, I got issues connecting to the API. When you do the request with the authorization code traktClient.Authentication.GetAuthorizationAsync it fails with 403.

The issue became clear that it could be because of the User-Agent, because Trakt is testing some better bot protection.

trakt/trakt-api#507

For future reference to others, add a copy of https://github.com/henrikfroehling/Trakt.NET/blob/d434e179df9de832f9ccf8985a723d5d25652c86/Source/Lib/Trakt.NET/Requests/Handler/HttpClientProvider.cs and add httpClient.DefaultRequestHeaders.UserAgent.ParseAdd("Here your user agent string"); and the creating of the client to something like:

TraktHttpClientProvider traktHttpClientProvider = new();
TraktClient traktClient = new("TraktClientId", "TraktClientSecret", traktHttpClientProvider);

I couldn't find an better option in any of the documentation. Maybe it could be an extra parameter or a traktClient.Configuration thing.

[henrikfroehling]

No need to copy the whole file.
You can also derive from HttpClientProvider.

public class MyTraktHttpClientProvider : HttpClientProvider
{
    protected override void SetDefaultRequestHeaders(HttpClient httpClient)
    {
        base.SetDefaultRequestHeaders(httpClient);
        httpClient.DefaultRequestHeaders.UserAgent.ParseAdd("Here your user agent string");
    }
}

And using it like this:

var traktClient = new TraktClient("TraktClientID", "TraktClientSecret", new MyTraktHttpClientProvider());