Re: [Doh] How to start HTTP/2?

Stephane Bortzmeyer <bortzmeyer@nic.fr> Wed, 17 January 2018 08:23 UTC

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Date: Wed, 17 Jan 2018 09:18:23 +0100
From: Stephane Bortzmeyer <bortzmeyer@nic.fr>
To: Patrick McManus <pmcmanus@mozilla.com>
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Subject: Re: [Doh] How to start HTTP/2?
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On Tue, Jan 16, 2018 at 10:29:54AM -0500,
 Patrick McManus <pmcmanus@mozilla.com> wrote 
 a message of 83 lines which said:

> imo, no.. a] h2 isn't required.. and even where its a should it is h2 or
> its successors. successors might do it differently.
...
> c] h2 can be extended in ways that could conflict with that language. I
> don't see the value in forcing those extensions to be aware enough to also
> extend DoH.

OK, I understand. But can it raise interoperability issues? If a
client tries one way and the server does not understand it, won't it
mean at least a delay in noticing and fixing the problem?

Martin Thomson said it is not a problem because everyone uses TLS and
ALPN, anyway. But it contradicts what you say about the possibility of
future changes using other techniques.