STREAM *head scratching*

when HTTP_REQUEST { 
  STREAM::disable 
  HTTP::header remove "Accept-Encoding" 
} 

Turns out this bit of iRule above is necessary to make all this work. However the stream profile @http://@https://@ does not. It had to be modified to @http@https@

The following expressions have different results... host = hello

STREAM::expression @http://@https://@ does not work

STREAM::expression @http://hello@https://hello@ does not work

STREAM::expression @http://\@https://\@ does work

STREAM::expression @http://$host@https://$host@ does work

STREAM::expression @http@https@ does work

Can anyone explain to me why certain things work and others do not. I would like to understand the parsing that is going on here.

Regards

Kevin (Jarvil)