page refresh issue

[Kris Melotte]

Hello,

I've installed CAS 3.5 RC2 and CAS Java Client 3.0.0-m1.

When I have been logged in successfully, CAS redirects me to the
application. Pressing the page refresh button at this time results in an
error as the CasValidationFilter tries to re-validate the ticket in the
request for a second time.

Perhaps someone mentioned this already but I think this can be fixed by
checking on assertion==null, in a similar way as was done in the
CasAuthenticationFilter.

Best regards,
Kris