In a recent blog post, I described how to add JWT authentication to an ASP.NET Core Web API project. This time I'm doing the same for a gRPC project. To test the authentication, I'm using similar Web API integration tests, with slightly modified setup to make them work with gRPC.
Although there's great support for JWT bearer authentication in ASP.NET Core, I had a hard time finding clear instructions on how to add it to an existing ASP.NET Core (Web API) project. In the end I decided to create my own sample project as the basis for discussing the ins and outs of JWT authentication.
To authenticate to an OAuth identity provider from a desktop app, the authorization code flow should be used. To implement it, you will have to host a web view control in your application.