Exposing proto files in a gRPC service over a frameworkless and lightweight API

A few days ago I introduced the notion of nano service in ASP.NET Core or rather how to implement a REST API without any particular framework (https://anthonygiretti.com/2020/06/29/nano-services-with-asp-net-core-or-how-to-build-a-light-api/). Since then, I have challenged myself regularly on the possibilities of relevant applications of this idea. Well, I found a very interesting use case: exposing the protobuffs of a gRPC service without using a framework and having to manage collisions with the gRPC framework of ASP.NET Core. This article will show you how to do it in the simplest way possible.