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splendid81_2675's avatar
splendid81_2675
Icon for Nimbostratus rankNimbostratus
Aug 17, 2016

HTTP header insertion using irules

Hi,

 

Need some help here, I am trying to insert a http header with value of another header in the same HTTP request, how do I do that?

 

E.g.

 

when HTTP_REQUEST { HTTP::header insert "User-Agent" [reference to another header value] }

 

application delivery
BIG-IP
devops
iRules

2 Replies

  • Vijay_E's avatar
    Vijay_E
    Icon for Cirrus rankCirrus
    Aug 17, 2016

    Try this:

     

    when HTTP_REQUEST { 
if { not (HTTP::header values  eq "") } {
set VALUE [HTTP::header values ]
HTTP::header insert "User-Agent" $VALUE
}

     

  • Kai_Wilke's avatar
    Kai_Wilke
    Icon for MVP rankMVP
    Aug 17, 2016

    Hi Splendid81,

    you may use the iRule code below...

     

    when HTTP_REQUEST { 
    if { [HTTP::header values ""] ne "" } then {
         HTTP::header remove ""
        HTTP::header replace "" [HTTP::header values ""]
    }
}

     

     

    Note: You may uncomment the HTTP::header remove "" line if security is a concern for you. Otherwise LTM will just replace/add a single occourence without checking if the same header name exist more than once.

    Cheers, Kai