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Re: [quicwg/base-drafts] Packet number echo with variable-length numbering (#391)

Marten Seemann <notifications@github.com> Tue, 14 March 2017 08:14 UTC

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Date: Tue, 14 Mar 2017 01:14:31 -0700
From: Marten Seemann <notifications@github.com>
To: quicwg/base-drafts <base-drafts@noreply.github.com>
Message-ID: <quicwg/base-drafts/pull/391/c286350552@github.com>
In-Reply-To: <quicwg/base-drafts/pull/391@github.com>
References: <quicwg/base-drafts/pull/391@github.com>
Subject: Re: [quicwg/base-drafts] Packet number echo with variable-length numbering (#391)
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Interesting idea, but if we remove the Largest Acked from the ACK frame itself, then we lose the property that every frame is self-describing (which, if I remember correctly, was considered a desirable property in Tokyo). From an implementor's perspective, this would introduce a lot of coupling between code parts that are otherwise separate. In the end, all we save is 4 bytes per RTT, so I'm not sure if it's really worth it.

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