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Yaniv_99962's avatar
Yaniv_99962
Icon for Nimbostratus rankNimbostratus
May 23, 2017

remove HTTP header based on its value

Lets say I have a client sending multiple headers with same name but different values. How can i remove just one of these headers if it's value is equal to something i'm looking for?

For example:

GET / HTTP/1.1
Test: a
Test: b
Test: c
Test: d

how can I remove just "Test: c" ?

Thanks in advanced

application delivery
http header
iRules
LTM
  • Anesh's avatar
    Anesh
    Icon for Cirrostratus rankCirrostratus
    May 23, 2017

    Try the below

    when HTTP_RESPONSE { 
   foreach header_name [HTTP::header names] { 
      if {[HTTP::header value Test] equals "c"}{ 
         HTTP::header remove $header_name 
      }
   }
}
  • Jad_Tabbara__J1's avatar
    Jad_Tabbara__J1
    Icon for Cirrostratus rankCirrostratus
    May 23, 2017

    Hello Yaniv,

    try this 

     set nTEST [HTTP::header count "TEST"]

 if { $nTEST eq "0" } {
      log local0. "Nothing to do => No TEST header found"
 } else {
    set TESTValueList [HTTP::header values "TEST"]
        set firstloop 0
        foreach TESTValue $TESTValueList {

                if { $firstloop eq "0"} {
                        HTTP::header remove "TEST"
                }

                if { $TESTValue eq "c"} {
                        nothing to do
                        log local0. "Removed -> TEST: $TESTValue"
                } else {
                        HTTP::header insert TEST $TESTValue
                        log local0. "Inserted -> TEST: $TESTValue"
                }

                set firstloop 1
        }
  }