Getting access to decoded JWT in ASP.NET Core 3.1

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Hi there

I have an ASP.NET Core 3.1 backend using SignalR to communicate with clients, rather than ASP.NET Core controllers. I am struggling to get access to the JWT, in particular, the sub from the JWT which I need. The example code given for an ASP.NET Core app doesn’t include accessing the sub from the JWT, although the quickstart includes a folder 01 - authorization, which gives me hope that there’s a subsequent example with some more juicy goodness. Am I right in thinking this?

In any event, perhaps I should start from the basics. How do I access the sub from the JWT in ASP.NET Core 3.1 controllers? Perhaps then I will have a better idea of how I’m going to access them from within my SignalR hubs.

I created a Stackoverflow post for this issue here: c# - Auth0, .NETCoreApp 3.1 and SignalR: obtaining decoded JWT - Stack Overflow

Any help greatly appreciated!

Mark

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Hi @mark.norgate1,

Welcome back to the Community!

Have you looked at our API docs that show how to decode a token? It looks like there is an example of getting the sub claim in there too.

Let me know if it helps,
Dan

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Hi there Dan

I don’t really know how or why, but I just tried to run my app again after reading through your post, and it is now working. Perhaps because now I am using Context.UserIdentidier rather than Context.User.

Anyway, it’s working now and I’m happy again, so thank you!

Mark

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Glad it was solved! Let us know if you have any other questions.

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