x-header information logging

You can iterate through the header names and look for a header name that starts with x- and then log the header name and value.

Here's an example:

when HTTP_REQUEST {
    initializes a variable to store the headers
   set headers
    loop through the header names
   foreach aHeader [HTTP::header names] {
       check if this header starts with x-
      if {[string tolower $aHeader] starts_with "x-"}{
          add the header name and value to the headers variable
         set headers "$headers; $aHeader: [HTTP::header value $aHeader]"
      }
   }
   if {$headers}{
      log local0. "client: [IP::client_addr]; x- headers: $headers"
   }
}

This assumes that there is only one instance of each header name. If you want to log multiple values of the same header name, try checking the HTTP::header page for info on HTTP::header values (Click here).

Aaron