Re: [quicwg/base-drafts] Don't recommend 3 RTTs of credit (and other editorial) (#3301)
ianswett <notifications@github.com> Thu, 19 December 2019 22:17 UTC
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Subject: Re: [quicwg/base-drafts] Don't recommend 3 RTTs of credit (and other editorial) (#3301)
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ianswett commented on this pull request. A few more suggestions, but this looks close. > @@ -801,33 +801,37 @@ limit is increased. ## Flow Credit Increments {#fc-credit} How about "Managing Flow Control"? > -If a sender runs out of flow control credit, it will be unable to send new data -and is considered blocked. It is generally considered best to not let the -sender become blocked. To avoid blocking a sender, and to reasonably account -for the possibility of loss, a receiver should send a MAX_DATA or -MAX_STREAM_DATA frame at least two round trips before it expects the sender to -get blocked. - -A receiver MUST NOT wait for a STREAM_DATA_BLOCKED or DATA_BLOCKED frame before -sending MAX_STREAM_DATA or MAX_DATA, since doing so will mean that a sender will -be blocked for at least an entire round trip, and potentially for longer if the -peer chooses to not send STREAM_DATA_BLOCKED or DATA_BLOCKED frames. +implementations. As an optimization, an endpoint could send frames related to +flow control only when there are other frames to send or when a peer is blocked, +ensuring that flow control does not cause extra packets to be sent. + +A sender that is blocked could choose to not send STREAM_DATA_BLOCKED or ```suggestion A blocked sender is not required to send STREAM_DATA_BLOCKED or ``` > -MAX_STREAM_DATA frame at least two round trips before it expects the sender to -get blocked. - -A receiver MUST NOT wait for a STREAM_DATA_BLOCKED or DATA_BLOCKED frame before -sending MAX_STREAM_DATA or MAX_DATA, since doing so will mean that a sender will -be blocked for at least an entire round trip, and potentially for longer if the -peer chooses to not send STREAM_DATA_BLOCKED or DATA_BLOCKED frames. +implementations. As an optimization, an endpoint could send frames related to +flow control only when there are other frames to send or when a peer is blocked, +ensuring that flow control does not cause extra packets to be sent. + +A sender that is blocked could choose to not send STREAM_DATA_BLOCKED or +DATA_BLOCKED frames. Therefore, a receiver MUST NOT wait for a +STREAM_DATA_BLOCKED or DATA_BLOCKED frame before sending a MAX_STREAM_DATA or +MAX_DATA frame; doing so could result in the sender being blocked for the rest +of the connection. Even if the sender sent these frames, waiting for them will ```suggestion of the connection. Even if the sender sends these frames, waiting for them will ``` > -A receiver MUST NOT wait for a STREAM_DATA_BLOCKED or DATA_BLOCKED frame before -sending MAX_STREAM_DATA or MAX_DATA, since doing so will mean that a sender will -be blocked for at least an entire round trip, and potentially for longer if the -peer chooses to not send STREAM_DATA_BLOCKED or DATA_BLOCKED frames. +implementations. As an optimization, an endpoint could send frames related to +flow control only when there are other frames to send or when a peer is blocked, +ensuring that flow control does not cause extra packets to be sent. + +A sender that is blocked could choose to not send STREAM_DATA_BLOCKED or +DATA_BLOCKED frames. Therefore, a receiver MUST NOT wait for a +STREAM_DATA_BLOCKED or DATA_BLOCKED frame before sending a MAX_STREAM_DATA or +MAX_DATA frame; doing so could result in the sender being blocked for the rest +of the connection. Even if the sender sent these frames, waiting for them will +result in the sender being blocked for at least an entire round trip. + +When a sender receives credit after being blocked, it can send a large amount of ```suggestion When a sender receives credit after being blocked, it may be able to send a large amount of ``` -- 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/3301#pullrequestreview-334967789
- [quicwg/base-drafts] Add pacing note to flow cont… Jana Iyengar
- Re: [quicwg/base-drafts] Add pacing note to flow … Marten Seemann
- Re: [quicwg/base-drafts] Add pacing note to flow … Jana Iyengar
- Re: [quicwg/base-drafts] Add pacing note to flow … Gorry Fairhurst
- Re: [quicwg/base-drafts] Add pacing note to flow … Jana Iyengar
- Re: [quicwg/base-drafts] Add pacing note to flow … Jana Iyengar
- Re: [quicwg/base-drafts] Don't recommend 3 RTTs o… Gorry Fairhurst
- Re: [quicwg/base-drafts] Don't recommend 3 RTTs o… Jana Iyengar
- Re: [quicwg/base-drafts] Don't recommend 3 RTTs o… Jana Iyengar
- Re: [quicwg/base-drafts] Don't recommend 3 RTTs o… Kazuho Oku
- Re: [quicwg/base-drafts] Don't recommend 3 RTTs o… ianswett
- Re: [quicwg/base-drafts] Don't recommend 3 RTTs o… ianswett
- Re: [quicwg/base-drafts] Don't recommend 3 RTTs o… Jana Iyengar
- Re: [quicwg/base-drafts] Don't recommend 3 RTTs o… Jana Iyengar
- Re: [quicwg/base-drafts] Don't recommend 3 RTTs o… Jana Iyengar
- Re: [quicwg/base-drafts] Don't recommend 3 RTTs o… Kazuho Oku
- Re: [quicwg/base-drafts] Don't recommend 3 RTTs o… Jana Iyengar
- Re: [quicwg/base-drafts] Don't recommend 3 RTTs o… Jana Iyengar
- Re: [quicwg/base-drafts] Don't recommend 3 RTTs o… Kazuho Oku
- Re: [quicwg/base-drafts] Don't recommend 3 RTTs o… ianswett
- Re: [quicwg/base-drafts] Don't recommend 3 RTTs o… Jana Iyengar
- Re: [quicwg/base-drafts] Don't recommend 3 RTTs o… Jana Iyengar
- Re: [quicwg/base-drafts] Don't recommend 3 RTTs o… ianswett
- Re: [quicwg/base-drafts] Don't recommend 3 RTTs o… Kazuho Oku
- Re: [quicwg/base-drafts] Don't recommend 3 RTTs o… Martin Thomson
- Re: [quicwg/base-drafts] Don't recommend 3 RTTs o… Jana Iyengar