How and when should a jwt token be issued to a user and a refresh token generated?

Question

ASP.NET

If I am already generating a token when a user logs in, then when will I know that he needs to refresh the token?
The token should be issued to the user if he is registered in one web application (it has its own login method to the application) and accesses some kind of api (jwt tokens), then you need to log in the user again in this system and then issue him a token to access resources?

Answer 1

When a token is generated, its validity period is set. Usually, a separate controller is made in api for logging in and issuing a token. The phrase is not clear, it is registered in one, and then register again.