Re: [quicwg/base-drafts] Limit RCID state (#3547)
Kazuho Oku <notifications@github.com> Fri, 27 March 2020 23:34 UTC
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Date: Fri, 27 Mar 2020 16:34:33 -0700
From: Kazuho Oku <notifications@github.com>
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Subject: Re: [quicwg/base-drafts] Limit RCID state (#3547)
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@kazuho commented on this pull request. > @@ -1069,6 +1069,17 @@ to cease using the connection IDs when requested can result in connection failures, as the issuing endpoint might be unable to continue using the connection IDs with the active connection. +An endpoint MAY elect to limit the number of outstanding RETIRE_CONNECTION_ID I think this should be a SHOULD. In case of a client-driven attack using path probes, an innocent server without this type of bound would end up holding infinite amount of state. > @@ -1069,6 +1069,17 @@ to cease using the connection IDs when requested can result in connection failures, as the issuing endpoint might be unable to continue using the connection IDs with the active connection. +An endpoint MAY elect to limit the number of outstanding RETIRE_CONNECTION_ID +frames to bound the necessary state. In order to allow a peer to retire all +previously issued connection IDs, this limit SHOULD be at least the +active_connection_id_limit. Within this limit, endpoints SHOULD prioritize +sending frames which the peer is least likely to have received. + +Endpoints SHOULD NOT issue updates of the Retire Prior To field before receiving +RETIRE_CONNECTION_ID frames for the previous update of Retire Prior To. Doing so +may result in the peer being unwilling to immediately retire all the connection +IDs, if retiring them would cause it to exceed its limit on outstanding +RETIRE_CONNECTION_ID frames, as described above. I think that the last sentence is inaccurate. As pointed out in my previous comments (https://github.com/quicwg/base-drafts/pull/3547#discussion_r399240482) an endpoint might receive a request to retire all the CIDs while it is already in the process of retiring some. In such case, *just* remembering `max_connection_id_limit` CIDs being retired is insufficient. I think it would be better if we removed the recommendations from these two paragraphs, so that each of them becomes a problem statement, then in a new paragraph describe some of the measures that an endpoint SHOULD toke; e.g.: * remember max_connection_id_limit CIDs, and also track those below RPT (as suggested by @ianswett in https://github.com/quicwg/base-drafts/pull/3547#discussion_r399248483) * remember 2 * max_connection_id_limit -- You are receiving this because you are subscribed to this thread. Reply to this email directly or view it on GitHub: https://github.com/quicwg/base-drafts/pull/3547#pullrequestreview-383250846
- [quicwg/base-drafts] Limit RCID state (#3547) martinduke
- Re: [quicwg/base-drafts] Limit RCID state (#3547) ianswett
- Re: [quicwg/base-drafts] Limit RCID state (#3547) martinduke
- Re: [quicwg/base-drafts] Limit RCID state (#3547) martinduke
- Re: [quicwg/base-drafts] Limit RCID state (#3547) Kazuho Oku
- Re: [quicwg/base-drafts] Limit RCID state (#3547) martinduke
- Re: [quicwg/base-drafts] Limit RCID state (#3547) Martin Thomson
- Re: [quicwg/base-drafts] Limit RCID state (#3547) Kazuho Oku
- Re: [quicwg/base-drafts] Limit RCID state (#3547) ianswett
- Re: [quicwg/base-drafts] Limit RCID state (#3547) ianswett
- Re: [quicwg/base-drafts] Limit RCID state (#3547) ianswett
- Re: [quicwg/base-drafts] Limit RCID state (#3547) Kazuho Oku
- Re: [quicwg/base-drafts] Limit RCID state (#3547) ianswett
- Re: [quicwg/base-drafts] Limit RCID state (#3547) Kazuho Oku
- Re: [quicwg/base-drafts] Limit RCID state (#3547) martinduke
- Re: [quicwg/base-drafts] Limit RCID state (#3547) martinduke
- Re: [quicwg/base-drafts] Limit RCID state (#3547) martinduke
- Re: [quicwg/base-drafts] Limit RCID state (#3547) martinduke
- Re: [quicwg/base-drafts] Limit RCID state (#3547) martinduke
- Re: [quicwg/base-drafts] Limit RCID state (#3547) martinduke
- Re: [quicwg/base-drafts] Limit RCID state (#3547) martinduke
- Re: [quicwg/base-drafts] Limit RCID state (#3547) ianswett
- Re: [quicwg/base-drafts] Limit RCID state (#3547) Mike Bishop
- Re: [quicwg/base-drafts] Limit RCID state (#3547) ianswett
- Re: [quicwg/base-drafts] Limit RCID state (#3547) Kazuho Oku
- Re: [quicwg/base-drafts] Limit RCID state (#3547) Nick Banks
- Re: [quicwg/base-drafts] Limit RCID state (#3547) Kazuho Oku
- Re: [quicwg/base-drafts] Limit RCID state (#3547) ianswett
- Re: [quicwg/base-drafts] Limit RCID state (#3547) Martin Thomson
- Re: [quicwg/base-drafts] Limit RCID state (#3547) ianswett
- Re: [quicwg/base-drafts] Limit RCID state (#3547) ianswett
- Re: [quicwg/base-drafts] Limit RCID state (#3547) ianswett
- Re: [quicwg/base-drafts] Limit RCID state (#3547) ianswett
- Re: [quicwg/base-drafts] Limit RCID state (#3547) ianswett
- Re: [quicwg/base-drafts] Limit RCID state (#3547) martinduke
- Re: [quicwg/base-drafts] Limit RCID state (#3547) martinduke
- Re: [quicwg/base-drafts] Limit RCID state (#3547) martinduke
- Re: [quicwg/base-drafts] Limit RCID state (#3547) martinduke
- Re: [quicwg/base-drafts] Limit RCID state (#3547) martinduke
- Re: [quicwg/base-drafts] Limit RCID state (#3547) ianswett
- Re: [quicwg/base-drafts] Limit RCID state (#3547) Martin Thomson
- Re: [quicwg/base-drafts] Limit RCID state (#3547) martinduke
- Re: [quicwg/base-drafts] Limit RCID state (#3547) martinduke
- Re: [quicwg/base-drafts] Limit RCID state (#3547) martinduke
- Re: [quicwg/base-drafts] Limit RCID state (#3547) martinduke
- Re: [quicwg/base-drafts] Limit RCID state (#3547) ianswett
- Re: [quicwg/base-drafts] Limit RCID state (#3547) Martin Thomson
- Re: [quicwg/base-drafts] Limit RCID state (#3547) martinduke
- Re: [quicwg/base-drafts] Limit RCID state (#3547) martinduke
- Re: [quicwg/base-drafts] Limit RCID state (#3547) Marten Seemann
- Re: [quicwg/base-drafts] Limit RCID state (#3547) Kazuho Oku
- Re: [quicwg/base-drafts] Limit RCID state (#3547) Martin Thomson
- Re: [quicwg/base-drafts] Limit RCID state (#3547) martinduke
- Re: [quicwg/base-drafts] Limit RCID state (#3547) Martin Thomson
- Re: [quicwg/base-drafts] Limit RCID state (#3547) Kazuho Oku
- Re: [quicwg/base-drafts] Limit RCID state (#3547) Kazuho Oku
- Re: [quicwg/base-drafts] Limit RCID state (#3547) Martin Thomson
- Re: [quicwg/base-drafts] Limit RCID state (#3547) Kazuho Oku
- Re: [quicwg/base-drafts] Limit RCID state (#3547) martinduke
- Re: [quicwg/base-drafts] Limit RCID state (#3547) ianswett
- Re: [quicwg/base-drafts] Limit RCID state (#3547) martinduke
- Re: [quicwg/base-drafts] Limit RCID state (#3547) Jana Iyengar
- Re: [quicwg/base-drafts] Limit RCID state (#3547) Jana Iyengar
- Re: [quicwg/base-drafts] Limit RCID state (#3547) Kazuho Oku
- Re: [quicwg/base-drafts] Limit RCID state (#3547) martinduke
- Re: [quicwg/base-drafts] Limit RCID state (#3547) Kazuho Oku
- Re: [quicwg/base-drafts] Limit RCID state (#3547) Kazuho Oku
- Re: [quicwg/base-drafts] Limit RCID state (#3547) martinduke
- Re: [quicwg/base-drafts] Limit RCID state (#3547) ianswett
- Re: [quicwg/base-drafts] Limit RCID state (#3547) martinduke
- Re: [quicwg/base-drafts] Limit RCID state (#3547) martinduke
- Re: [quicwg/base-drafts] Limit RCID state (#3547) martinduke
- Re: [quicwg/base-drafts] Limit RCID state (#3547) martinduke
- Re: [quicwg/base-drafts] Limit RCID state (#3547) Kazuho Oku
- Re: [quicwg/base-drafts] Limit RCID state (#3547) martinduke
- Re: [quicwg/base-drafts] Limit RCID state (#3547) martinduke
- Re: [quicwg/base-drafts] Limit RCID state (#3547) Kazuho Oku
- Re: [quicwg/base-drafts] Limit RCID state (#3547) martinduke
- Re: [quicwg/base-drafts] Limit RCID state (#3547) martinduke
- Re: [quicwg/base-drafts] Limit RCID state (#3547) Kazuho Oku
- Re: [quicwg/base-drafts] Limit RCID state (#3547) Martin Thomson
- Re: [quicwg/base-drafts] Limit RCID state (#3547) Martin Thomson
- Re: [quicwg/base-drafts] Limit RCID state (#3547) Kazuho Oku
- Re: [quicwg/base-drafts] Limit RCID state (#3547) Kazuho Oku
- Re: [quicwg/base-drafts] Limit RCID state (#3547) martinduke
- Re: [quicwg/base-drafts] Limit RCID state (#3547) martinduke
- Re: [quicwg/base-drafts] Limit RCID state (#3547) Martin Thomson
- Re: [quicwg/base-drafts] Limit RCID state (#3547) Kazuho Oku
- Re: [quicwg/base-drafts] Limit RCID state (#3547) martinduke
- Re: [quicwg/base-drafts] Limit RCID state (#3547) martinduke
- Re: [quicwg/base-drafts] Limit RCID state (#3547) Kazuho Oku
- Re: [quicwg/base-drafts] Limit RCID state (#3547) ianswett
- Re: [quicwg/base-drafts] Limit RCID state (#3547) martinduke
- Re: [quicwg/base-drafts] Limit RCID state (#3547) ianswett
- Re: [quicwg/base-drafts] Limit RCID state (#3547) ianswett
- Re: [quicwg/base-drafts] Limit RCID state (#3547) ianswett
- Re: [quicwg/base-drafts] Limit RCID state (#3547) ianswett
- Re: [quicwg/base-drafts] Limit RCID state (#3547) ianswett
- Re: [quicwg/base-drafts] Limit RCID state (#3547) Martin Thomson
- Re: [quicwg/base-drafts] Limit RCID state (#3547) martinduke
- Re: [quicwg/base-drafts] Limit RCID state (#3547) ekr
- Re: [quicwg/base-drafts] Limit RCID state (#3547) Martin Thomson
- Re: [quicwg/base-drafts] Limit RCID state (#3547) martinduke
- Re: [quicwg/base-drafts] Limit RCID state (#3547) Eric Kinnear
- Re: [quicwg/base-drafts] Limit RCID state (#3547) martinduke
- Re: [quicwg/base-drafts] Limit RCID state (#3547) martinduke
- Re: [quicwg/base-drafts] Limit RCID state (#3547) martinduke
- Re: [quicwg/base-drafts] Limit RCID state (#3547) martinduke
- Re: [quicwg/base-drafts] Limit RCID state (#3547) martinduke
- Re: [quicwg/base-drafts] Limit RCID state (#3547) martinduke
- Re: [quicwg/base-drafts] Limit RCID state (#3547) ekr
- Re: [quicwg/base-drafts] Limit RCID state (#3547) martinduke
- Re: [quicwg/base-drafts] Limit RCID state (#3547) ekr
- Re: [quicwg/base-drafts] Limit RCID state (#3547) ianswett
- Re: [quicwg/base-drafts] Limit RCID state (#3547) martinduke
- Re: [quicwg/base-drafts] Limit RCID state (#3547) martinduke
- Re: [quicwg/base-drafts] Limit RCID state (#3547) ekr
- Re: [quicwg/base-drafts] Limit RCID state (#3547) Eric Kinnear
- Re: [quicwg/base-drafts] Limit RCID state (#3547) Martin Thomson