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prilin_265672's avatar
prilin_265672
Icon for Nimbostratus rankNimbostratus
Jun 09, 2017

iRule Data Group non-case sensitive comparison

I am writing a program for filtering out headers from http requests. I have defined a new data group "ALLOWED_HEADERS" which contains the headers I want to allow in the request.

 

In my iRule file, I am iterating through my http headers and comparing every header with the group. How do I make this comparison non case sensitive.

 

Here is my code:

 

foreach hname [HTTP::header names] { if {not (class match -nocase ${hname} equals ALLOWED_HEADERS] }} { HTTP::header remove "${hname}" } }

 

I am unsure of the syntax. Can someone please help me validate the "if" statement?

 

application delivery
iRules
security

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  • Samir_Jha_52506's avatar
    Samir_Jha_52506
    Icon for Noctilucent rankNoctilucent
    Jun 10, 2017

    Modified few event in iRule. Please have try and confirm.

            foreach hname [string tolower [HTTP::header names]] 
            { if { ![class matches -value $hname equals ALLOWED_HEADERS] } 
                  HTTP::header remove "$hname" } 
             }
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