New launch inside existing connection

Hi Kevin,

You may take a look to the iRule below.

The iRule uses an extended control structure to detect if the previous HTTP request on the same connection had used the same HTTP cookie value. If the cookie value is the same, the cookie decodings/decryptions/node selections can be savely skiped to reduce CPU overhead.

when CLIENT_ACCEPTED {
    set last_cookie ""
}
when HTTP_REQUEST {
    if { [HTTP::path] eq "/select" } then {
         Compute cookie
         Redirect while injecting cookie
    } else {
        if { $last_cookie eq "X[HTTP::cookie value "MyCookie"]" } then {
             Skip cookie parsings and node selection
        } elseif { [HTTP::cookie value "MyCookie"] ne "" } then {
             Decode Cookie
             Decrypt Cookie
            if { $decrypted_cookie ne "" } then {
                 Select Node
                set last_cookie "X[HTTP::cookie value "MyCookie"]"
                 Note: Dont remove the X. Its not a typo, but very important! :-)
            } else {
                reject
            }   
        } else {
            reject
        }
    }
}

Cheers, Kai