Writing Client-Cert info into Header - irule with strange behavior

I already had such issue. there might be another issue, if CN contains a comma (with backslash before), split command may cause an issue. I used following code to convert comma to | except if comma is backslashed:

array set dnparts [split [string map [list "\\," "," " , " "|" " ," "|" ", " "|"] $dn] "|="]

this command already create the array.

your code become:

when HTTP_REQUEST priority 200 {
    ...
     create HTTP headers with ssl cert infos
    set dn [ X509::issuer $cert ]
     Split DN into Parts
    array set dnparts [split [string map [list "\\," "," " , " "|" " ," "|" ", " "|"] $dn] "|="]

     Insert the neccessary headers from the DN
    HTTP::header insert "SSL_CLIENT_I_DN"           "\"$dn\""
    foreach field [array names dnparts] {
        HTTP::header insert "SSL_CLIENT_I_DN_$field" "\"$dnparts($field)\""
    }
}