Rest

In this article, I want to talk about a few things in .NET such as HTTP requests with an Http Client, HTTP message handlers, records... For the theoretical aspect of these topics, I think the official documentation on docs.microsoft.com and many blog articles already explain them very well, better than I could ever do. But what I am interested in here is to talk about these topics through a case study.

In our daily job, we often have to query secure REST APIs that require our HTTP requests to have a valid access token in their Authorization header. Of course, many APIs come with an SDK that makes the job easier for us as it directly takes care of retrieving a token and sending the authenticated HTTP requests. However, it is not always the case and knowing how to implement that using HttpClient, IMemoryCache, and DelegatingHandler can become pretty useful.

Let's talk about tooling and testing an API!