How can I force DfaMatcher to log an error when no candidates are found?

[DefinitelyADev]

Hello all!

Is the a way to capture, in order to log as error, the case "No candidates found for the request path..."?
I am thinking of switching Microsoft.AspNetCore.Routing.Matching.DfaMatcher to debug but, I don't see the point of having "x candidate(s) found for the request path..." when the request is correct. I just want to log (and maybe add a prometheus metric), for the paths with no candidates.

Thanks!

[Tratcher]

You could log in middleware if no Endpoint is set. (HttpContext.GetEndpoint() == null).

[Tratcher]

In the future dotnet/runtime#82465 could help here.