[Technical Errata Reported] RFC9002 (7539)

RFC Errata System <rfc-editor@rfc-editor.org> Wed, 07 June 2023 13:19 UTC

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Subject: [Technical Errata Reported] RFC9002 (7539)
From: RFC Errata System <rfc-editor@rfc-editor.org>
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The following errata report has been submitted for RFC9002,
"QUIC Loss Detection and Congestion Control".

--------------------------------------
You may review the report below and at:
https://www.rfc-editor.org/errata/eid7539

--------------------------------------
Type: Technical
Reported by: Sergey Kandaurov <pluknet@nginx.com>

Section: 5.3

Original Text
-------------
smoothed_rtt = 7/8 * smoothed_rtt + 1/8 * adjusted_rtt
rttvar_sample = abs(smoothed_rtt - adjusted_rtt)
rttvar = 3/4 * rttvar + 1/4 * rttvar_sample


Corrected Text
--------------
rttvar_sample = abs(smoothed_rtt - adjusted_rtt)
rttvar = 3/4 * rttvar + 1/4 * rttvar_sample
smoothed_rtt = 7/8 * smoothed_rtt + 1/8 * adjusted_rtt


Notes
-----
Per Appendix A.7 of this RFC and Section 2 of the referred RFC 6298,
rttvar should be computed before updating smoothed_rtt itself.

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--------------------------------------
RFC9002 (draft-ietf-quic-recovery-34)
--------------------------------------
Title               : QUIC Loss Detection and Congestion Control
Publication Date    : May 2021
Author(s)           : J. Iyengar, Ed., I. Swett, Ed.
Category            : PROPOSED STANDARD
Source              : QUIC
Area                : Transport
Stream              : IETF
Verifying Party     : IESG