iRule rewrite | URL hiding

e.g.

 1st f5

root@ve10(Active)(tmos) list ltm virtual firstvs
ltm virtual firstvs {
    destination 172.28.24.9:https
    ip-protocol tcp
    mask 255.255.255.255
    pool firstpool
    profiles {
        clientssl {
            context clientside
        }
        http { }
        tcp { }
    }
    rules {
        firstrule
    }
    snat automap
}
root@ve10(Active)(tmos) list ltm pool firstpool
ltm pool firstpool {
    members {
        172.28.24.10:webcache { }
    }
}
root@ve10(Active)(tmos) list ltm rule firstrule
ltm rule firstrule {
    when HTTP_REQUEST {
  if { [HTTP::host] eq "www.mysite.com" and [HTTP::uri] starts_with "/help/site1/" } {
    HTTP::header replace Host "news.bizsite.com:8080"
    HTTP::uri [string map {"/help/site1/" "/ehelp/microsites/"} [HTTP::uri]]
  }
}
}

 2nd f5

root@(ve11a)(cfg-sync In Sync)(Active)(/Common)(tmos) list ltm virtual secondvs
ltm virtual secondvs {
    destination 172.28.24.10:8080
    ip-protocol tcp
    mask 255.255.255.255
    pool secondpool
    profiles {
        tcp { }
    }
    source 0.0.0.0/0
    source-address-translation {
        type automap
    }
    vs-index 5
}
root@(ve11a)(cfg-sync In Sync)(Active)(/Common)(tmos) list ltm pool secondpool
ltm pool secondpool {
    members {
        200.200.200.101:8080 {
            address 200.200.200.101
        }
    }
}