public class SchemeEnforcementFilter implements Filter(Code)
The SchemeEnforcementFilter is provided for Roller sites that enable secure
logins and want to ensure that only login urls are used under https.
author: Allen Gilliland
Process filter.
We'll take the incoming request and first determine if this is a
secure request. If the request is secure then we'll see if it matches
one of the allowed secure urls, if not then we will redirect back out
of https.