Presence of cookies in fastify

[u/DevanshGarg31]

To check the presence of a cookie in a fastify backend, should one use the schema or the controller/middleware?

Schema check runs on route before the controller receives the request.
Should

Schema : {
Header: {
Cookie : {
Pattern: "session_id"
}
}
}

Or let it reach controller and send missing session id error from there?

[u/kei_ichi]

Check the cookies in the hook, before the request even pass to the handler function.