APM irule: remote login page needs referer

Hi Mike,

You've succeeded in inserting a cookie into the request. This would be sent to the pool member and probably ignored.

I think you could set a variable to track the value to insert in ACCESS_SESSION_STARTED and then do the cookie insert in HTTP_RESPONSE.

when ACCESS_SESSION_STARTED {
   set orig_referer [HTTP::header value Referer]
   log local0. "Referer: $orig_referer"
}
when HTTP_RESPONSE {

    Check if orig_referer is set
   if { [info exists orig_referer] }{

       Insert the cookie in the response
      HTTP::cookie insert name orig_referer_cookie value $orig_referer path "/"

       Unset the variable so we only set the cookie once
      unset orig_referer
   }
}

If you're using the cookie for access control, you might want to encrypt it. You can do this by setting the cookie name in a custom HTTP profile for 'cookies to encrypt'. Or you could do it manually using 'HTTP::cookie encrypt|decrypt':

http://devcentral.f5.com/wiki/default.aspx/iRules/http__cookie

Aaron