Re: [quicwg/base-drafts] Connection ID lengths 1, 2 and 3 bytes can't be encoded (#1570)

Kazuho Oku <> Tue, 07 August 2018 22:05 UTC

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From: Kazuho Oku <>
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Subject: Re: [quicwg/base-drafts] Connection ID lengths 1, 2 and 3 bytes can't be encoded (#1570)
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In addition to linkability, the other issue with the proposal is that you could easily run out of CIDs when stateless reset is being used. Quoting from the editors' draft:

> Revealing the Stateless Reset Token allows any entity to terminate the connection, so a value can only be used once. This method for choosing the Stateless Reset Token means that the combination of connection ID and static key cannot occur for another connection.

Considering the two issues, I prefer not allowing shorter CID lengths in QUICv2 (formerly called v1). P2P can be a post-v2 thing.

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