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Re: [quicwg/base-drafts] Require peers to check if RETIRE_CONNECTION_ID sequence number is valid (#3037)

Kazuho Oku <notifications@github.com> Tue, 17 September 2019 09:01 UTC

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From: Kazuho Oku <notifications@github.com>
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Subject: Re: [quicwg/base-drafts] Require peers to check if RETIRE_CONNECTION_ID sequence number is valid (#3037)
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I think the question is if we consider *processing* of NEW_CONNECTION_ID and RETIRE_CONNECTION_ID frames as a mandatory feature.

Migration is an optional feature of QUIC. For endpoints that do not migrate, there is no reason to update the Connection IDs (note that even though we recently introduced Retire Prior To field, we do not mandate endpoints to respect it - the keyword is "SHOULD"). If we consider that way, I think it is reasonable to never use a MUST for anything related to NEW_CONNECTION_ID or RETIRE_CONNECTION_ID frames.

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