X-Forwarded-For to send information other than Client IP

Hi,

 

We are kind of stuck while implementing a solution.

 

We need to send Client SSL Certificate common name from BIG-IP to the Middle-Tier server. I read in google that X-Forwarded-For send only Client IP.

 

Is there any header other than X-Forwarded-For which can send information(in our case its Certificate common name) to the MT server?

 

Your help would be much appreciated.

 

Regards, Prabir