I ran in the same problem, I figured out that using custom auth tables in provider app make the client app to run in infinite loop. I also tried to include 'username' field to the custom Auth table but did not solve the problem.
My custom Auth Table https://gist.github.com/1172687 ( I tried with username = True, but did not works) *then in the client app i have* auth = Auth(db,hmac_key=Auth.get_or_create_key(),cas_provider=' http://0.0.0.0:8000/tutor/default/user/cas') from gluon.contrib.login_methods.cas_auth import CasAuth auth.settings.login_form=CasAuth(globals(), urlbase = " http://0.0.0.0:8000/tutor/default/user/cas";, actions=['login', 'validate', 'logout']) I got this as url: http://0.0.0.0:8000/tutor/default/user/cas/login?service=http://0.0.0.0:8000/client/default/user/login and the browser error: This webpage has a redirect loop The webpage at * http://0.0.0.0:8000/tutor/default/user/cas/login?service=http://0.0.0.0:8000/client/default/user/login * has resulted in too many redirects. Clearing your cookies for this site or allowing third-party cookies may fix the problem. If not, it is possibly a server configuration issue and not a problem with your computer. It is strange because I already use CAS in another apps, but this apps has default auth table and runs very well, I also created an adapter to bring groups and permissions from provider to client and stores in a kind of cache. The problem seems to be when using custom auth tables. Any clue?
