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Re: Multiple header fields with the same field name - unwritten assumption about quoted commas in values?

From: Nico Williams <nico@cryptonector.com>
Date: Tue, 15 Jan 2013 18:07:48 -0600
Message-ID: <CAK3OfOg17M3LTPwFJXFuHrq4AZh505hq27xoeVwJsPTvA7_3aw@mail.gmail.com>
To: Mark Nottingham <mnot@mnot.net>
Cc: Karl Dubost <karld@opera.com>, Julian Reschke <julian.reschke@gmx.de>, Piotr Dobrogost <p@ietf.dobrogost.net>, ietf-http-wg@w3.org
On Tue, Jan 15, 2013 at 6:01 PM, Mark Nottingham <mnot@mnot.net> wrote:
> On 16/01/2013, at 10:57 AM, Nico Williams <nico@cryptonector.com> wrote:
>> No.  I'm saying that it's OK for apps to do that but not any other
>> entities (middleboxes), mostly because middleboxes can't possibly know
>> about headers that hadn't been registered when they were implemented.
> OK. Is this an actual problem you've encountered?
> I'm fine with adding some clarifying text if it helps implementers, but I haven't seen this confusing any middlebox vendors; they tend to leave the bits alone...

I noticed Poul's and someone else's replies that in their middlebox
implementations they concluded that it's never safe to merge headers.
If that's the case (and I do think it follows from the facts that it
is the case) then we should say so rather than leave each implementor
to figure this out on their own.

Received on Wednesday, 16 January 2013 00:08:12 UTC

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