ASM Custom Response Page

Hi Mark,

I believe you could use an iRule to do it, by first setting a variable that indicates that it needs to 'unset cookies', and then inserting the cookies in the HTTP_RESPONSE_RELEASE event. I'm not sure in which ASM event you'd be setting the 'need_to_unset_cookies' variable to 1, but once you found it, try something like this:

when HTTP_RESPONSE_RELEASE {
    if { $need_to_unset_cookies == 1 } {
         List the cookies
        set cookies [HTTP::header values "Set-Cookie"]
         Remove existing Set-Cookie headers
        HTTP::header remove "Set-Cookie"
         Run through the list, reinserting only those you want
        foreach cookie $cookies {
            if { !($cookie contains "___utmvc") } {
                HTTP::header insert "Set-Cookie" $cookie
        }
        }
         Insert your custom version of the cookies you wanted to change
        HTTP::header insert "Set-Cookie" "___utmvc=deleted; domain=.foo.bar; path=/; expires=Thu, 01 Jan 1970 00:00:00 GMT"
    }
}