New event for CookieAuthenticationEvents when authentication cookie is renewed/refreshed

[ptffr]

Is there an existing issue for this?

• I have searched the existing issues

Is your feature request related to a problem? Please describe the problem.

I am currently issuing an additional cookie based on the authenticated user when they sign in, but the problem is that I can't reliably know when the authentication cookie is refresh to issue the additional cookie again.

I checked the CookieAuthenticationHandler and seems like the refresh happens in FinishResponseAsync which can be overridden, but doesn't really provide the information when/if the refresh happened. Might be possible to detect it by checking the response Set-Cookie but that way I don't know the AuthenticationProperties of the new cookie.

Describe the solution you'd like

A new event OnRefresh/OnRenew in CookieAuthenticationEvents that is fired with the new principal+properties somewhere after AppendResponseCookie in FinishResponseAsync

Additional context

No response

[krisbiradar]

Hi , @wtgodbe if this seems worth going forward with , i'm happy to pick this up.

[wtgodbe]

CC @BrennanConroy