Hi Donny,
Is the Portal behind a load balancer? Um, not sure exactly what you're asking, but it's not behind a web dispatcher. We have an alias URL which directs traffic via reverse-proxy to the Portal.
Interesting on the ssl/http. The alias portal.mycompany.com forces a switch to https, and directs traffic to the portal. The portal is only operating http.
The parameter you offered is appreciated, but I'm not using a web dispatcher. Don't understand the part where you said "or set a header field named ClientProtocol for reverse proxy like Apache." Can you elaborate?
By the way - our IdP (I stated WebSphere above - that was incorrect) is Shibboleth.
Thanks,
Bryan