iRule Script in Ver 9 is not functioning

What do you mean with the pool as the last sentence? Did you modify the rule I posted? If so...please don't. I'm trying to rule out what could be going wrong. If you're modifying things that I can't see, I'm never going to be able to track down what's happening.

If you are using the most recent rule I posted, it shouldn't be possible for that loop to exist, as the rule I posted checked the TCP port the request was coming in for before performing the redirect. You said yourself that when you implemented the updated rule, the loop stopped happening, and the redirection stopped occuring.

Please stop updating things without re-posting the rule you're currently working with.

As far as I know, since you haven't updated me, I'm under the impression you are still using this rule:

when HTTP_REQUEST {
  set uri [string tolower [HTTP::uri]]
  if { (($uri starts_with "/webnav") or ($uri starts_with "/webapp")) and ([TCP::local_port] == 80) } {
    log local0. "URI matches, and Port matches, redirecting to HTTPS"
    HTTP::redirect "https://[HTTP::host][HTTP::uri]"
  } else {
    log local0. "No match, forwarding to the pool"
    pool POOL_HTTP_Vlan70
  }
}

The log you included doesn't seem to reflect that, as that loop shouldn't be possible with this rule. This should provide the exact functionality you asked for. It checks the URI, and the TCP port. It redirects to https if it's not already, and passes to the normal pool if it doesn't match those requirements.

-Colin