What seems to be another corner case of MAGNOLIA-8821 we have an issue where if a redirect URL is used after a login the protocol portion of the URL is being wrongly encoded. It's because redirection scheme does not take into account absolute urls.

Basically "http://" is changed to "http%3A//" where the colon is being encoded.

Reproduce

• magnolia.utf8.enabled=true
• One option is to configure the CAS module (version 1.3.2) by setting parameters: casLoginURL, casLogoutURL, casServiceURL, casTicketRequestParameter,casValidateURL.

Expected
Should be redirected and the url should be correctly compressed.

Actual
Magnolia fails to redirect after several attempts due to wrong compression of the redirect url ("https%3A//.....")

Workaround
Bypass the GZipFilter to ignore compressing the redirect url.