Setting multiple headers in an outgoing request

How do I send multiple identically named headers in an outgoing
request?  At the moment I'm doing:

  List.iter (fun cookie -> msg#set_req_header "Cookie" cookie) cookies;

However it appears that each call to set_req_header overrides the
previous header - resulting in only one outgoing cookie (I need to
send four).

Rich.

-- 
Richard Jones, CTO Merjis Ltd.
Merjis - web marketing and technology - http://merjis.com
Team Notepad - intranets and extranets for business - http://team-notepad.com


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