Re: [quicwg/base-drafts] Better describe the use of Preferred Address (#3354)

Kazuho Oku <> Mon, 20 January 2020 09:15 UTC

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From: Kazuho Oku <>
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Subject: Re: [quicwg/base-drafts] Better describe the use of Preferred Address (#3354)
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kazuho commented on this pull request.

 If path validation succeeds, the client SHOULD immediately begin sending all
-future packets to the new server address using the new connection ID and
-discontinue use of the old server address.  If path validation fails, the client
-MUST continue sending all future packets to the server's original IP address.
+future packets to the new server and discontinue use of the old server address,
+and retire the connection ID that was used for the original path
+({{retiring-cids}}).  If path validation fails, or if the client decides not to
+migrate to the preferred address, it MUST continue sending all future packets to
+the server's original IP address, and retire the connection ID provided by the
+preferred_address transport parameter.  Retirement of either of these connection
+IDs notifies the server of the address the client has chosen.

Maybe you want to state that in the issue (i.e. #3353), as we've been discussing there about having this requirement?

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