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Re: Knowledge transfer for extending QUIC (was Re: New Version Notification for draft-huitema-quic-ts-05.txt)

Lucas Pardue <lucaspardue.24.7@gmail.com> Thu, 18 March 2021 19:15 UTC

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References: <161602961576.29713.5556006395853657310@ietfa.amsl.com> <a5d9bbf2-227d-90b6-fd22-52e05895713b@huitema.net> <2F127CC0-5D13-4DEB-9B4D-4EF89C8D9E0F@apple.com> <71a72a2c-b6eb-7640-391c-663d21afa8da@huitema.net> <CALGR9oZ-RHaK2sYoypqAfQvBXHmsfTrGOLCJKL4yfdRWkUkYDA@mail.gmail.com> <ec8176ed-347e-9f88-8504-100213809058@huitema.net> <CADdTf+h_KkWSu5P1o4Ho0_wA+5E-T0YT5nkwj_Ud=R9tJL2GCQ@mail.gmail.com> <CALGR9ob+zZn3WfJpGKesZYGqq=OCbXX6v-ezNyc6JjJnmqyXkw@mail.gmail.com> <c0c80e50-4cee-53b4-0ec7-1a40859ac153@huitema.net>
In-Reply-To: <c0c80e50-4cee-53b4-0ec7-1a40859ac153@huitema.net>
From: Lucas Pardue <lucaspardue.24.7@gmail.com>
Date: Thu, 18 Mar 2021 19:15:43 +0000
Message-ID: <CALGR9oZ3=gNSm1_dS4M5G0uw77P+VhRz1+=XrymA-Tqz3WiYkQ@mail.gmail.com>
Subject: Re: Knowledge transfer for extending QUIC (was Re: New Version Notification for draft-huitema-quic-ts-05.txt)
To: Christian Huitema <huitema@huitema.net>
Cc: IETF QUIC WG <quic@ietf.org>, Matt Joras <matt.joras@gmail.com>
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On Thu, Mar 18, 2021 at 7:10 PM Christian Huitema <huitema@huitema.net>
wrote:

>
> What we have now is simple: just explain in the spec that the extension
> is treated as an extension of the ACK. I am not sure that we know enough
> to specify a container format or any such superstructure. Consider for
> example the ACK_MP proposals, in which a single packet could carry
> several ACK_MP. There are good reasons to add a TIMESTAMP to such
> packets, but you need only one of those for several ACK_MP. It would be
> very easy to define "container" formats that break in such unanticipated
> cases.
>

That's an excellent reason not to overcomplicate things and stick to
independent frame types like TIMESTAMP.

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