Within the Echo project, there is a directory called middleware, which contains many contributed middleware solutions seen here: https://github.com/labstack/echo/tree/master/middleware. These middleware functions have been vetted by the community, and follow the middleware best practices guidelines. In this section, we will dissect one very useful middleware, and show how to use these middleware in our example application.
We will start by looking at middleware.JWT, which is a very helpful middleware that takes a JSON Web Token (JWT) from the request header specified by the developer and validates that the token is legitimate. In our example, the handlers.Login handler will validate the user credentials with bcrypt, and after that verification, we will create a JWT for the caller to insert into their request headers. The following is the JWT creation code located in...
