Help for when_http_response

[root@ve10:Active] config  b virtual bar list
virtual bar {
   snat automap
   destination 172.28.19.79:80
   ip protocol 6
   rules myrule
   profiles {
      http {}
      tcp {}
   }
}
[root@ve10:Active] config  b rule myrule list
rule myrule {
   when HTTP_REQUEST {
   set flag 0
   set path [HTTP::path]
   switch -glob $path {
      "/HARDWARE*" {
         set flag 1
         set collected 0
         if { [HTTP::version] eq "1.1" } {
            if { [HTTP::header is_keepalive] } {
               HTTP::header replace "Connection" "Keep-Alive"
            }
            HTTP::version "1.0"
         }
         pool HTTP_active
      }
      default {
          do someting
      }
   }
}

when HTTP_RESPONSE {
   if {$flag == 0} { return }

   if { [HTTP::header exists "Content-Length"] } {
      set content_length [HTTP::header "Content-Length"]
   } else {
      set content_length 0
   }
   if { $content_length > 0 && $content_length < 1048577 } {
      set collect_length $content_length
   } else {
      set collect_length 1048576
   }
   if { $collect_length > 0 } {
      HTTP::collect $collect_length
   }
}

when HTTP_RESPONSE_DATA {
   log local0. "client [IP::client_addr]:[TCP::client_port] | server [IP::remote_addr]:[TCP::remote_port] | path $path | payload [HTTP::payload]"
   HTTP::release

   set collected [expr {$collected + $collect_length}]
   set remaining [expr {$content_length - $collected}]
   if { $remaining > 0 } {
      if { $remaining < $collect_length } {
         set collect_length $remaining
      }
      HTTP::collect $collect_length
   }
}
}

[root@ve10:Active] config  tail -f /var/log/ltm
Jul 20 21:02:20 local/tmm info tmm[5111]: Rule myrule : client 192.168.206.55:51246 | server 200.200.200.101:80 | path /HARDWARE/test.html | payload hello world