Need Fallback Host without HTTP profile

I have an iRule that can be used in place of Fallback Host on the http profile that looks like this:

 

 

when HTTP_REQUEST {

 

if { [active_members http_pool] > 0 } {

 

pool http_pool

 

} else {

 

pool fail_pool

 

}

 

}

 

 

However, what if a user is passing HTTPS traffic through the BigIP, not terminating on the BigIP, i.e., 443 vip to 443 pool members without BigIP termination? In this scenario, an HTTP profile cannot be used, therefore, the iRule above would not work and, of course, a Fallback Host would not be available. What can I use for fallback if there are not any pool memebers available?

 

 

I have seen the "when LB_FAILED", but not quite sure about the rule operators to use to send the requests to a specific host/node/pool if there are no available pool members.

 

 

Any help would be appreciated. BTW, the version in question is v9.2.5.

 

 

Thanks,

 

 

Lance