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Path and Retire connection ID

Christian Huitema <huitema@huitema.net> Wed, 16 December 2020 22:15 UTC

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Subject: Path and Retire connection ID
To: Martin Duke <martin.h.duke@gmail.com>, Lucas Pardue <lucaspardue.24.7@gmail.com>
Cc: QUIC WG <quic@ietf.org>
References: <160810286972.22457.5330092965264463113@ietfa.amsl.com> <45ce5065-931b-40a8-8167-5dd814dcfacf.miaoji.lym@alibaba-inc.com> <c4823a2d-0b70-4295-8953-9dfbac377e60@beta.fastmail.com> <CALGR9obEDcZ_LK1cjrPKrmCxJ5vpwVs1_-eFcYHhKLKkdg8tDw@mail.gmail.com> <CAM4esxRLJCjQt69Gh+9Bfsbg+9HbvyeEpvrDEgk5NxeMhKQoaA@mail.gmail.com>
From: Christian Huitema <huitema@huitema.net>
Message-ID: <7d542cff-e1f3-30b3-a75a-28785877256e@huitema.net>
Date: Wed, 16 Dec 2020 14:14:58 -0800
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On 12/16/2020 1:39 PM, Martin Duke wrote:
> Thanks for this draft! I like the way it's going.
>
> I'm not sure I like the repurposing of RETIRE_CONNECTION_ID to close a 
> path. There are other valid reasons to retire a path -- for instance, 
> the sequence number is low relative to the other active ones, and the 
> intermediate numbers are requiring extra state. RETIRE_CONNECTION_ID 
> is useful to force the peer to use a new CID for the path.

We had a bit of discussion about that. The RETIRE_CONNECTION_ID is not 
meant to trigger a peer's action, except for freeing the resource 
associated with the connection ID that is being retired. The PATH_STATUS 
frame may be used to request a peer to abandon a path.

-- Christian Huitema

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