Need an iRule to append domain.com on an HTTPS request

Are the requests coming from the internet or the intranet? The problem I would see with this idea from the internet is that you have to have a fully qualified domain to being with (e.g. example.com) so you'd be trying to redirect to

example.com.domain.com

which I'm guessing isn't what you want. So that would probably not work right.

Internally, if you're just trying to redirect from a simple hostname to a fully qualified hostname (e.g.

https://example

to

https://example.domain.com

), you would need to create a new iRule a little different than your current one and then attach it to your HTTPS vip. something like this probably.

when HTTP_REQUEST {
    switch -glob [string tolower [HTTP::host]] {
        *.domain.com {
             Do nothing
        }
        default {
            HTTP::redirect https://[HTTP::host].domain.com[HTTP::uri]
        }
    }
}