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Forum Discussion

Sriram_129909's avatar
Sriram_129909
Icon for Nimbostratus rankNimbostratus
Apr 21, 2014

iRule to block Excessive cookie size

I need to block some requests that are having excessive cookie header size (more than 8190 bytes). Is there a variable in iRule that would give me the size in bytes?  
application delivery
devops
iRules
Kevin_Stewart's avatar
Kevin_Stewart
Icon for Employee rankEmployee
Apr 23, 2014

Well, you could technically use the (partially obsolete) string bytelength command:

when HTTP_RESPONSE {
    foreach x [HTTP::cookie names] {
        log local0. "cookie($x) = [string length $x[HTTP::cookie value $x]]"
        log local0. "cookie($x) = [string bytelength $x[HTTP::cookie value $x]]"
    }
}

But I venture that the ASCII length is going to be pretty close to the byte length.