Re: [quicwg/base-drafts] New connection IDs are mandatory for intentional migration (#2414)

Jana Iyengar <> Wed, 06 February 2019 05:29 UTC

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Subject: Re: [quicwg/base-drafts] New connection IDs are mandatory for intentional migration (#2414)
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janaiyengar commented on this pull request.

> -with length greater than zero SHOULD provide their peers with new connection IDs
-before migration.
-: If both endpoints change connection ID in response to seeing a change in
-  connection ID from their peer, then this can trigger an infinite sequence of
-  changes.
+An endpoint MUST NOT intentionally migrate to a new path if it does not have a
+connection ID to use on that path.  An endpoint that exhausts available
+connection IDs cannot migrate.  To ensure that migration is possible and packets
+sent on different paths cannot be correlated, endpoints SHOULD provide new
+connection IDs before peers migrate.
+If a peer chooses to receive packets with zero-length connection IDs, an
+endpoint can always migrate - zero-length connection IDs provide no significant

endpoint can always migrate, since zero-length connection IDs provide no significant

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