irule to a pool using SSL

When you say "my website returns HTTP not HTTPS", are you referring to redirects and document object references pointing to the http:// URL? If so, that's actually a pretty common issue when offloading SSL, and there are two things you can do about it:

1. There's an option in the HTTP profile called "Redirect Rewrite". This option is designed to catch redirects from the server and rewrite the http:// in the Location header to https://. This only applies to redirect (ie. 30x) responses.

2. An iRule and STREAM profile to catch all of the document object references in the HTTP payload. Apply a generic (empty) STREAM profile to the VIP and the following iRule:

   when HTTP_REQUEST {
       HTTP::header remove Accept-Encoding
       STREAM::disable
   }
   when HTTP_RESPONSE {
       if { [HTTP::header Content-Type] contains "text" } {
           STREAM::expression {@http://@https://@}
           STREAM::enable
       }
   }
   

A STREAM is basically like a regular expression evaluator, but in hardware, so it's super fast. The above will find any reference to the string http:// in the HTTP response paylaod and replace it with https://. You may need to be more explicit in your search/replace if you have strings that you don't want replaced.