http header

[kewing]

Hi, I'm a new computer scientist, and sorry for my bad english ... I'm a
french. I want ask a question for http_header. I would add a no standard
http header. I would modify Pragma header and insert for example
FR123456FR. How can I do this? I know that I must modify Squid source,
and maybe modify HttpHeader.cc. I'm on ubuntu 9.04 jaunty.
Thx for trying to help me.