iRule https redirection

You can change the request to the Origin Web Servers independent of the request from the client. To accomplish this you would can use HTTP::uri to change the request before it is handed to the back-end.

In your case you would end up with something like this:

HTTP::uri "/foo[HTTP::uri]"

However, since you are also required to force all traffic from port 80 to 443 you'll have to use a two-tier approach:

1. Force all traffic to HTTPS. (on the VIP for port 80)
2. Rewrite requests to the home page to include /foo/ (on the VIP for port 443)

Rule for Port 80 VIP:

 Permanently redirect HTTP to HTTPS

    when HTTP_REQUEST {

        HTTP::respond 301 Location "https://[HTTP::host][HTTP::uri]"

    }

Rule for Port 443 VIP:

 Rewrite requests for the home page to /foo/ (to the OWS only - no change to client URL)

when HTTP_REQUEST {

    if { [HTTP::path] eq "/" || [string tolower [HTTP::path]] eq "/index.php" } {

        HTTP::uri "/foo[HTTP::uri]"

    } 

}

Depending on the way the links are constructed on the resources on the OWS (HTML, JS, CSS, etc.) you may need to tweak this a bit to accommodate your specific situation.