Re: [quicwg/base-drafts] active_connection_id_limit interacts poorly with Retire Prior To (#3193)

Kazuho Oku <notifications@github.com> Fri, 08 November 2019 07:26 UTC

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Date: Thu, 07 Nov 2019 23:26:21 -0800
From: Kazuho Oku <notifications@github.com>
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Subject: Re: [quicwg/base-drafts] active_connection_id_limit interacts poorly with Retire Prior To (#3193)
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@MikeBishop 
> The [minutes](https://github.com/quicwg/wg-materials/blob/master/interim-19-01/minutes.md#issue-1994-endpoints-don-t-know-how-many-connections-ids-the-peer-is-willing-to-store) aren't super informative.... @kazuho was against it being an error, and @ekr thought it needed to be a hard requirement if present. Nothing else specific about who opposed it or why.

IIRC, some mildly opposed to the addition of active_connection_id_limit because it's an unnecessary complexity, arguing that the model could be simple as: issue-some initially, then issue more as the peer uses the CIDs. After the discussion, the middle ground that we agreed was to make it an advisory settings. Note that we made this decision prior to the addition of Retire Prior To.

But now, with the introduction of Retire Prior To, we have another way of retiring CIDs. I think that the simple model is no longer unsustainable.

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