Connection verification to another pool

 virtual server 1 iRule (pool 1) 
when CLIENT_ACCEPTED {
    populate session table with client IP address for 1 hour
   session add source_addr [IP::client_addr] 1 3600
   use pool 1
}
 virtual server 2 iRule (pool 2) 
when CLIENT_ACCEPTED {
   if { [session lookup source_addr [IP::client_addr]] } {
      use pool 2
   } else {
      redirect "http://"
   }
}