When a request comes in to your ASP.NET site, it's routed through a series of message handlers (in ASP.NET Web API) or modules (in ASP.NET MVC), each of which performs some operation on the request.

Learn how to read request headers and work with optional data that is passed between the server and client in ASP.NET Core 5 applications. ASP.NET Core MVC 5 is a lightweight, open source framework ...