I have a question about the notation of iRules (HTTP_RESPONSE)

Hi,

During application development, you can use this irule :

when CLIENT_ACCEPTED {
    set nodebug 1
}

when HTTP_REQUEST {
    if {([HTTP::cookie value debug_mode] equals 1) || ([URI::query [HTTP::uri] debug_mode] equals 1)} {
        set nodebug 0
    } 
}

when HTTP_RESPONSE {
    if {$nodebug} {
        switch -glob -- [HTTP::status] {
            [4][0][1-9] -
            [4][1-9][0-9] {
                HTTP::redirect "https://naiyo.com/err/notfound.html";
            }
            [5][0-9][0-9] {
                HTTP::redirect "https://naiyo.com/err/servererror.html";
            }
        }
    } else {
        HTTP::cookie insert name debug_mode value 1
    }
}

the goal of this code is to use query parameter debug_mode=1 first time to allow debug mode.

then, a cookie is inserted in the response and next requests will be managed as debug.