Re: [quicwg/base-drafts] Idle timeout indicates you will timeout (#3099)
Martin Thomson <notifications@github.com> Tue, 29 October 2019 23:25 UTC
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Subject: Re: [quicwg/base-drafts] Idle timeout indicates you will timeout (#3099)
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martinthomson approved this pull request. Thanks for doing this. I wonder if we have any place where we can state the principle that drives this. That is, "after the time indicated in max_idle_timeout, the endpoint will no longer send nor accept packets." > -processed successfully. The timer is also restarted when sending a packet -containing frames other than ACK or PADDING (an ack-eliciting packet; see -{{QUIC-RECOVERY}}), but only if no other ack-eliciting packets have been sent -since last receiving a packet. Restarting when sending packets ensures that -connections do not prematurely time out when initiating new activity. - -The value for an idle timeout can be asymmetric. The value advertised by an -endpoint is only used to determine whether the connection is live at that -endpoint. An endpoint that sends packets near the end of the idle timeout -period of a peer risks having those packets discarded if its peer enters the -draining state before the packets arrive. If a peer could timeout within a -Probe Timeout (PTO; see Section 6.3 of {{QUIC-RECOVERY}}), it is advisable to -test for liveness before sending any data that cannot be retried safely. Note -that it is likely that only applications or application protocols will -know what information can be retried. +Each endpoint advertises a different max idle timeout, but the effective value ```suggestion Each endpoint advertises a different max_idle_timeout, but the effective value ``` > -{{QUIC-RECOVERY}}), but only if no other ack-eliciting packets have been sent -since last receiving a packet. Restarting when sending packets ensures that -connections do not prematurely time out when initiating new activity. - -The value for an idle timeout can be asymmetric. The value advertised by an -endpoint is only used to determine whether the connection is live at that -endpoint. An endpoint that sends packets near the end of the idle timeout -period of a peer risks having those packets discarded if its peer enters the -draining state before the packets arrive. If a peer could timeout within a -Probe Timeout (PTO; see Section 6.3 of {{QUIC-RECOVERY}}), it is advisable to -test for liveness before sending any data that cannot be retried safely. Note -that it is likely that only applications or application protocols will -know what information can be retried. +Each endpoint advertises a different max idle timeout, but the effective value +is determined by taking the minimum of the two advertised values. By announcing +a max idle timeout, endpoints commit to initiating an immediate close ```suggestion a max_idle_timeout, endpoints commit to initiating an immediate close ``` > -test for liveness before sending any data that cannot be retried safely. Note -that it is likely that only applications or application protocols will -know what information can be retried. +Each endpoint advertises a different max idle timeout, but the effective value +is determined by taking the minimum of the two advertised values. By announcing +a max idle timeout, endpoints commit to initiating an immediate close +({{immediate-close}}) if it abandons a connection prior to the effective value. + +An endpoint restarts any timer it maintains when a packet from its peer is +received and processed successfully. The timer is also restarted when sending +a packet containing frames other than ACK or PADDING (an ack-eliciting packet; +see {{QUIC-RECOVERY}}), but only if no other ack-eliciting packets have been +sent since last receiving a packet. Restarting when sending packets ensures +that connections do not prematurely time out when initiating new activity. + +An endpoint that sends packets near the end of its peer's idle timeout period ```suggestion An endpoint that sends packets near the end of the idle timeout period ``` > @@ -2344,28 +2344,30 @@ source address. ## Idle Timeout {#idle-timeout} -If the idle timeout is enabled, a connection is silently closed and the state is -discarded when it remains idle for longer than both the advertised +If the idle timeout is enabled by either peer, a connection is silently closed +and the state is discarded when it remains idle for longer than the max idle timeout (see {{transport-parameter-definitions}}) and three times the ```suggestion max_idle_timeout (see {{transport-parameter-definitions}}) and three times the ``` > @@ -2344,28 +2344,30 @@ source address. ## Idle Timeout {#idle-timeout} -If the idle timeout is enabled, a connection is silently closed and the state is -discarded when it remains idle for longer than both the advertised +If the idle timeout is enabled by either peer, a connection is silently closed +and the state is discarded when it remains idle for longer than the max ```suggestion and the state is discarded when it remains idle for longer than the ``` -- 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/3099#pullrequestreview-308890908
- [quicwg/base-drafts] Idle timeout indicates you w… ianswett
- Re: [quicwg/base-drafts] Idle timeout indicates y… Jana Iyengar
- Re: [quicwg/base-drafts] Idle timeout indicates y… ianswett
- Re: [quicwg/base-drafts] Idle timeout indicates y… ianswett
- Re: [quicwg/base-drafts] Idle timeout indicates y… Martin Thomson
- Re: [quicwg/base-drafts] Idle timeout indicates y… ianswett
- Re: [quicwg/base-drafts] Idle timeout indicates y… ianswett
- Re: [quicwg/base-drafts] Idle timeout indicates y… ianswett
- Re: [quicwg/base-drafts] Idle timeout indicates y… Kazuho Oku
- Re: [quicwg/base-drafts] Idle timeout indicates y… ianswett
- Re: [quicwg/base-drafts] Idle timeout indicates y… ianswett
- Re: [quicwg/base-drafts] Idle timeout indicates y… Nick Banks
- Re: [quicwg/base-drafts] Idle timeout indicates y… Martin Thomson
- Re: [quicwg/base-drafts] Idle timeout indicates y… Mike Bishop
- Re: [quicwg/base-drafts] Idle timeout indicates y… ianswett
- Re: [quicwg/base-drafts] Idle timeout indicates y… ianswett
- Re: [quicwg/base-drafts] Idle timeout indicates y… ianswett
- Re: [quicwg/base-drafts] Idle timeout indicates y… ianswett
- Re: [quicwg/base-drafts] Idle timeout indicates y… ianswett
- Re: [quicwg/base-drafts] Idle timeout indicates y… Jana Iyengar
- Re: [quicwg/base-drafts] Idle timeout indicates y… ianswett
- Re: [quicwg/base-drafts] Idle timeout indicates y… ianswett
- Re: [quicwg/base-drafts] Idle timeout indicates y… ianswett
- Re: [quicwg/base-drafts] Idle timeout indicates y… ianswett
- Re: [quicwg/base-drafts] Idle timeout indicates y… ianswett
- Re: [quicwg/base-drafts] Idle timeout indicates y… ianswett
- Re: [quicwg/base-drafts] Idle timeout indicates y… ianswett
- Re: [quicwg/base-drafts] Idle timeout indicates y… ianswett
- Re: [quicwg/base-drafts] Idle timeout indicates y… ianswett
- Re: [quicwg/base-drafts] Idle timeout indicates y… ianswett
- Re: [quicwg/base-drafts] Change to max_idle_timeo… ianswett
- Re: [quicwg/base-drafts] Change idle_timeout to m… ianswett
- Re: [quicwg/base-drafts] Change idle_timeout to m… Martin Thomson
- Re: [quicwg/base-drafts] Change idle_timeout to m… Marten Seemann
- Re: [quicwg/base-drafts] Change idle_timeout to m… Martin Thomson
- Re: [quicwg/base-drafts] Change idle_timeout to m… Jana Iyengar
- Re: [quicwg/base-drafts] Change idle_timeout to m… Jana Iyengar
- Re: [quicwg/base-drafts] Change idle_timeout to m… ianswett
- Re: [quicwg/base-drafts] Change idle_timeout to m… ianswett
- Re: [quicwg/base-drafts] Change idle_timeout to m… ianswett
- Re: [quicwg/base-drafts] Change idle_timeout to m… ianswett
- Re: [quicwg/base-drafts] Change idle_timeout to m… ianswett
- Re: [quicwg/base-drafts] Change idle_timeout to m… ianswett
- Re: [quicwg/base-drafts] Change idle_timeout to m… Martin Thomson
- Re: [quicwg/base-drafts] Change idle_timeout to m… Jana Iyengar
- Re: [quicwg/base-drafts] Change idle_timeout to m… Martin Thomson
- Re: [quicwg/base-drafts] Change idle_timeout to m… Martin Thomson
- Re: [quicwg/base-drafts] Change idle_timeout to m… Martin Thomson