Anitha,

What you are asking is in the realm of single logout. Single logout is messy 
business. It will never work the way you, or anyone else, thinks it will.

My only hint would be to set the TST life time to the same as, or just longer, 
than OP session length. This will make the cas session, in general, longer.
It will of course get more complicated if you add more providers or other 
sources of authentication.
Something else to think about is how this change will affect other applications 
you support.

Ray


On Mon, 2022-04-11 at 14:39 -0700, Anitha C wrote:
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We have CAS v6.5.0 deployed to do delegated authentication to a generic OIDC 
provider.

The configuration also includes the logout URL to the OIDC provider, so that 
the user is logged out of the OIDC provider on logging out of the application 
and CAS.

On successful authentication, the PAC4j user profile is saved along with the 
TST ticket in the ticket registry. So, when the user logs out, the user profile 
tied to the TST ticket is retrieved and the OIDC logout occurs.

However, if the TST expires before the user logs out, there is no user profile 
found for the session, and so OIDC logout never happens in that case.

What is the ideal/recommended timeout value for a transient session ticket in a 
CAS server that is configured to do delegated authentication?

Are there any other configurations to store/retrieve the OIDC user profile 
besides in TST?

Appreciate any suggestions on handling this use case.

Thanks.







--

Ray Bon
Programmer Analyst
Development Services, University Systems
2507218831 | CLE 019 | r...@uvic.ca<mailto:r...@uvic.ca>

I acknowledge and respect the lək̓ʷəŋən peoples on whose traditional territory 
the university stands, and the Songhees, Esquimalt and WSÁNEĆ peoples whose 
historical relationships with the land continue to this day.

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