Detect HTTP Pipelining Request

But the first request, in which the method saved on httpmethodprev variable, is not rejected.

Only the subsequent request successfully being rejected.can we count number of keyword (e.g. GET, HEAD) and reject when it occurs more than 1?

e.g.

[root@ve10:Active] config  b virtual bar list
virtual bar {
   snat automap
   pool foo
   destination 172.28.19.252:80
   ip protocol 6
   rules myrule
   profiles {
      http {}
      tcp {}
   }
}
[root@ve10:Active] config  b rule myrule list
rule myrule {
   when CLIENT_ACCEPTED {
  TCP::collect
}
when CLIENT_DATA {
  if { [llength [lsearch -all [TCP::payload] HEAD]] > 1 } {
    reject
    return
  }
  TCP::release
  TCP::collect
}
}

[root@ve10:Active] config  ssldump -Aed -nni 0.0 port 80
New TCP connection 1: 172.28.20.17(47909) <-> 172.28.19.252(80)
1374923550.5707 (0.0007)  C>S
---------------------------------------------------------------
HEAD /frist HTTP/1.1
Host:

HEAD /second HTTP/1.1
Host:

---------------------------------------------------------------

1    1374923550.5708 (0.0000)  S>C  TCP RST