Hands-On RESTful Web Services with ASP.NET Core 3

Introducing middleware

As the name suggests, middleware is a component placed between our application and incoming requests. Incoming requests hit the middleware's pipeline before they can reach the effective logic implemented in our application. As a result, middleware are considered one of the essential concepts of ASP.NET Core because it is the first layer in front of our application, and it is usually associated with cross-cutting concepts such as logging, error handling, authentication, and validation. It can also perform advanced tasks such as conditional service initialization, based on a request.

In general, middleware can:

• Handle, process, and modify incoming HTTP requests
• Handle, process, and change outgoing HTTP responses
• Interrupt ...