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Re: [quicwg/base-drafts] Largest acked in ACK frame MUST NOT decrease (#2205)

Kazuho Oku <notifications@github.com> Tue, 08 January 2019 10:47 UTC

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Date: Tue, 08 Jan 2019 10:47:17 +0000
From: Kazuho Oku <notifications@github.com>
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Subject: Re: [quicwg/base-drafts] Largest acked in ACK frame MUST NOT decrease (#2205)
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@gloinul 
> I think there are strong hints, with the above "usually the largest" indicating that it is not always. I would have made this explicit in 19.3, but then I prefer being more explicit than not. I think it is possible interop issue point. Anywhere else this is more explicit?

As suggested by @martinthomson in #2312, 
[section 13.2](https://quicwg.org/base-drafts/draft-ietf-quic-transport.html#rfc.section.13.2) might be the correct place. I am advocating for describing the design principle the PR, but we might (or might not) be interested in expanding how ACK could look like.

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