APM open webtop links in new browser tab?

Here's an irule that can work around this issue in some cases. Basically here's the basic working condition:

1. User visits / URL with a new browser session
2. User is given session cookie and goes through access policy
3. User is assigned a webtop
4. User is redirected to webtop URL

Now if the user opens a new tab and does step 1 again, the session is destroyed and they can go through those steps again to get the webtop. The session is only destroyed if a webtop is assigned. If you're using LTM+APM mode (no webtop, it goes to just the pool instead), then the / URI request is simply delivered to the pool server.

You can intercept step 1 and check if a user has a session, then do some custom stuff. This irule is simple to modify to suit your use case.

 apm_dont_logout_if_new_tab
 
 Tested in v11.4.0

 If you hit APM logon page with another already-logged-in browser tab or window open, your 
 old APM session is destroyed, in favor of the new one. This workaround irule looks up the 
 existing session and will return an error page instead.



 This functionality is different than other typical Web applications, where a log-in is required
 to destroy the old session. APM sets the session cookie *immediately* upon hitting the login page,
 in order to allow a more flexible approach to the programmability of the login process.


when RULE_INIT {
  
   mode 1 = display error page on user browser if logged on user is already active
   mode 2 = redirect the user to their current landing URI (full webtop, etc)
                        
   Set mode here  \/  

  set static::mode  2

}

when HTTP_REQUEST {
  if { ([HTTP::uri] == "/") && [HTTP::cookie exists MRHSession ] && [ACCESS::session exists] } {
    HTTP::close

    switch $static::mode {
      1 {
        HTTP::respond 200 content "Please close 
        this browser window or exit your current remote access session before visiting 
        the login page.
Or, "
      }

      2 {
        set starturi [ACCESS::session data get "session.policy.result.start_uri"]
        log local0. "redirecting to starturi: $starturi"
        HTTP::respond 302 Location "$starturi"
      }
      default {
        return
      }
    }
    return
  }
}