Baron, You can try these loggers set to trace. I think most of the protocol stuff is handled by pac4j.
<AsyncLogger name="org.apereo" level="${sys:cas.log.level}" includeLocation="true"/> <AsyncLogger name="org.pac4j" level="${sys:pac4j.log.level}" includeLocation="true"/> <!-- DEBUG outbound and inbound headers and response--> <AsyncLogger name="org.apache.http" level="debug" /> And spend the next 2 d crawling through the output ;) Ray P.S. careful with credentials in the logs On Thu, 2022-06-16 at 07:38 -1000, Baron Fujimoto wrote: Notice: This message was sent from outside the University of Victoria email system. Please be cautious with links and sensitive information. Is there a way to log or trace the actual CAS protocol messages exchanged with a client? The logs provide a wealth of details, but not the actual protocol messages exchanged that I've found. We haven't really used Aperero's CAS for SAML yet, but I know the Shibboleth IdP can do this, and there are SAML trace browser extensions as well. I'm hoping for something analogous for the CAS protocol stuff specifically. -- Baron Fujimoto <ba...@hawaii.edu<mailto:ba...@hawaii.edu>> ::: UH Information Technology Services minutas cantorum, minutas balorum, minutas carboratum descendus pantorum -- - Website: https://apereo.github.io/cas - Gitter Chatroom: https://gitter.im/apereo/cas - List Guidelines: https://goo.gl/1VRrw7 - Contributions: https://goo.gl/mh7qDG --- You received this message because you are subscribed to the Google Groups "CAS Community" group. To unsubscribe from this group and stop receiving emails from it, send an email to cas-user+unsubscr...@apereo.org. To view this discussion on the web visit https://groups.google.com/a/apereo.org/d/msgid/cas-user/f839e1ff4266e82239beb76b1f9c11a7bc1c5503.camel%40uvic.ca.