[webkit-dev] Why is HTTPHeaderMap a map instead of multi-map?
darin at apple.com
Mon Feb 23 14:46:50 PST 2009
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
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.
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