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

Kazuho Oku <notifications@github.com> Fri, 17 January 2020 02:53 UTC

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Subject: [quicwg/base-drafts] Better describe the use of Preferred Address (#3354)
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This PR changes the following:
* Better clarifies when the client should initiated migration to the preferred address (i.e., when the handshake is *confirmed*).
* States that an unused active connection ID should be used, rather than stating that the connection ID provided by TP.preferred_address have to be used. This fixes the ambiguity regarding the use of CID in relation to CID retirement. As noted in https://github.com/quicwg/base-drafts/issues/3353#issuecomment-575396028, this change does not require modification of existing code.
* Expand the explanation of the fields contained in TP.preferred_address.

closes #3353.
You can view, comment on, or merge this pull request online at:

  https://github.com/quicwg/base-drafts/pull/3354

-- Commit Summary --

  * specify the timing clearly
  * relax the requirement so that it works well with CID retirements
  * clarify what `Connection ID` and `Stateless Reset Token` fields are
  * refer to the section that talks about issuing CIDs

-- File Changes --

    M draft-ietf-quic-transport.md (20)

-- Patch Links --

https://github.com/quicwg/base-drafts/pull/3354.patch
https://github.com/quicwg/base-drafts/pull/3354.diff

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