On Feb 14, 2009, at 11:41 AM, Paul Pedriana wrote:
Given that HTTP header fields can have the same header represented
more than once, why is it that HTTPHeaderMap is a map and not a
multi-map?
When there are multiple HTTP header fields with the same field name,
it’s just shorthand for a comma-separated list (see <http://www.w3.org/Protocols/rfc2616/rfc2616-sec4.html#sec4.2
>). So logically there really is only one value for each field name.
How would you send a ResourceRequest that has two headers of the
same name to an HTTP server?
I’m not sure what piece of code “you” is here. Are you asking about
the behavior of XMLHttpRequest?
There’s a related issue with the order of header fields. Using a map
for header field values means it’s up to the networking layer to order
the header fields.
-- Darin
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