Loosing HTTPS After Logging In

OK, so your iRule is redundant. If a client switches to HTTP, it'll send it's request on port 80 and it obviously won't be responded to. I'm not sure why there would be a http:// link sent in a server response when the server itself is running SSL but hey, bad code is everywhere!

 

 

The simplest fix I would say is to create an additional port 80 version of your Virtual Server, don't assign a Default Pool but assign a HTTP Profile and this iRule;

 

when HTTP_REQUEST {
 HTTP::redirect "https://[HTTP::host][HTTP::uri]
}