Validating a previously issued token from the resource server

[flipkickmedia]

From the resource server, Id call an API endpoint on the auth server and check the token passed to the resource server is valid. How do you return tokens that were previously issued so I can validate them?

I'm using the example server/client in the source as a basis. It would be great to see this inside the example, so any extension on that codebase would be helpful. A PR on the example with this included would be great.

https://stackoverflow.com/questions/12296017/how-to-validate-an-oauth-2-0-access-token-for-a-resource-server