HTTP to HTTPS and Back

I'm assuming from your post that you have two virtual servers (one for HTTP and one for HTTPS). If that is the case you can have two rules with the reverse logic in each.

I'd also suggest using a class list (data group) to contain your urls. It's much easier to manage that way and then you can change them in one place if you need to. You'll need to add these values into a data group in the iRules section of the GUI. If you don't want to use a data group, you can replace the if statement with two string compares separated by a logical OR.

class secure_uris {
   "/getting_started/contact.asp"
   "/moving/help_request.asp"
}

For your HTTP virtual do something like this:

when HTTP_REQUEST {
   if the uri starts with one of the values in the
   secure_uris list, then redirect to the HTTPS version
  if { [matchclass [HTTP::uri] starts_with $::secure_uris] } {
    HTTP::redirect "https://[HTTP::host][HTTP::uri]"
  }
}

For your HTTPS virtual:

when HTTP_REQUEST {
   if the uri doesn't start with one of the values in the
   secure_uris list, then redirect to the HTTP version
  if { ! [matchclass [HTTP::uri] starts_with $::secure_uris] } {
    HTTP::redirect "http://[HTTP::host][HTTP::uri]"
  }
}

Or, if you want a single rule that you can apply to both virtuals, you can distinguish HTTP vs. HTTPS via the TCP::local_port value.

when HTTP_REQUEST {
  if { [TCP::local_port] == 80 } {
     if the uri starts with one of the values in the
     secure_uris list, then redirect to the HTTPS version
    if { [matchclass [HTTP::uri] starts_with $::secure_uris] } {
      HTTP::redirect "https://[HTTP::host][HTTP::uri]"
    }
  } else {
     if the uri doesn't start with one of the values in the
     secure_uris list, then redirect to the HTTP version
    if { ! [matchclass [HTTP::uri] starts_with $::secure_uris] } {
      HTTP::redirect "http://[HTTP::host][HTTP::uri]"
    }
  }
}

This hasn't been tested, but should give you something to get you going.

-Joe