draft-ietf-quic-recovery-06.txt   draft-ietf-quic-recovery-latest.txt 
QUIC Working Group J. Iyengar, Ed. QUIC Working Group J. Iyengar, Ed.
Internet-Draft I. Swett, Ed. Internet-Draft I. Swett, Ed.
Intended status: Standards Track Google Intended status: Standards Track Google
Expires: March 26, 2018 September 22, 2017 Expires: March 28, 2018 September 24, 2017
QUIC Loss Detection and Congestion Control QUIC Loss Detection and Congestion Control
draft-ietf-quic-recovery-06 draft-ietf-quic-recovery-latest
Abstract Abstract
This document describes loss detection and congestion control This document describes loss detection and congestion control
mechanisms for QUIC. mechanisms for QUIC.
Note to Readers Note to Readers
Discussion of this draft takes place on the QUIC working group Discussion of this draft takes place on the QUIC working group
mailing list (quic@ietf.org), which is archived at mailing list (quic@ietf.org), which is archived at
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Internet-Drafts are working documents of the Internet Engineering Internet-Drafts are working documents of the Internet Engineering
Task Force (IETF). Note that other groups may also distribute Task Force (IETF). Note that other groups may also distribute
working documents as Internet-Drafts. The list of current Internet- working documents as Internet-Drafts. The list of current Internet-
Drafts is at https://datatracker.ietf.org/drafts/current/. Drafts is at https://datatracker.ietf.org/drafts/current/.
Internet-Drafts are draft documents valid for a maximum of six months Internet-Drafts are draft documents valid for a maximum of six months
and may be updated, replaced, or obsoleted by other documents at any and may be updated, replaced, or obsoleted by other documents at any
time. It is inappropriate to use Internet-Drafts as reference time. It is inappropriate to use Internet-Drafts as reference
material or to cite them other than as "work in progress." material or to cite them other than as "work in progress."
This Internet-Draft will expire on March 26, 2018. This Internet-Draft will expire on March 28, 2018.
Copyright Notice Copyright Notice
Copyright (c) 2017 IETF Trust and the persons identified as the Copyright (c) 2017 IETF Trust and the persons identified as the
document authors. All rights reserved. document authors. All rights reserved.
This document is subject to BCP 78 and the IETF Trust's Legal This document is subject to BCP 78 and the IETF Trust's Legal
Provisions Relating to IETF Documents Provisions Relating to IETF Documents
(https://trustee.ietf.org/license-info) in effect on the date of (https://trustee.ietf.org/license-info) in effect on the date of
publication of this document. Please review these documents publication of this document. Please review these documents
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4.7.5. On Packet Acknowledgement . . . . . . . . . . . . . . 17 4.7.5. On Packet Acknowledgement . . . . . . . . . . . . . . 17
4.7.6. On Packets Lost . . . . . . . . . . . . . . . . . . . 17 4.7.6. On Packets Lost . . . . . . . . . . . . . . . . . . . 17
4.7.7. On Retransmission Timeout Verified . . . . . . . . . 18 4.7.7. On Retransmission Timeout Verified . . . . . . . . . 18
5. IANA Considerations . . . . . . . . . . . . . . . . . . . . . 18 5. IANA Considerations . . . . . . . . . . . . . . . . . . . . . 18
6. References . . . . . . . . . . . . . . . . . . . . . . . . . 18 6. References . . . . . . . . . . . . . . . . . . . . . . . . . 18
6.1. Normative References . . . . . . . . . . . . . . . . . . 18 6.1. Normative References . . . . . . . . . . . . . . . . . . 18
6.2. Informative References . . . . . . . . . . . . . . . . . 18 6.2. Informative References . . . . . . . . . . . . . . . . . 18
6.3. URIs . . . . . . . . . . . . . . . . . . . . . . . . . . 19 6.3. URIs . . . . . . . . . . . . . . . . . . . . . . . . . . 19
Appendix A. Acknowledgments . . . . . . . . . . . . . . . . . . 19 Appendix A. Acknowledgments . . . . . . . . . . . . . . . . . . 19
Appendix B. Change Log . . . . . . . . . . . . . . . . . . . . . 19 Appendix B. Change Log . . . . . . . . . . . . . . . . . . . . . 19
B.1. Since draft-ietf-quic-recovery-05 . . . . . . . . . . . . 19 B.1. Since draft-ietf-quic-recovery-06 . . . . . . . . . . . . 19
B.2. Since draft-ietf-quic-recovery-04 . . . . . . . . . . . . 20 B.2. Since draft-ietf-quic-recovery-05 . . . . . . . . . . . . 20
B.3. Since draft-ietf-quic-recovery-03 . . . . . . . . . . . . 20 B.3. Since draft-ietf-quic-recovery-04 . . . . . . . . . . . . 20
B.4. Since draft-ietf-quic-recovery-02 . . . . . . . . . . . . 20 B.4. Since draft-ietf-quic-recovery-03 . . . . . . . . . . . . 20
B.5. Since draft-ietf-quic-recovery-01 . . . . . . . . . . . . 20 B.5. Since draft-ietf-quic-recovery-02 . . . . . . . . . . . . 20
B.6. Since draft-ietf-quic-recovery-00 . . . . . . . . . . . . 20 B.6. Since draft-ietf-quic-recovery-01 . . . . . . . . . . . . 20
B.7. Since draft-iyengar-quic-loss-recovery-01 . . . . . . . . 20 B.7. Since draft-ietf-quic-recovery-00 . . . . . . . . . . . . 20
Authors' Addresses . . . . . . . . . . . . . . . . . . . . . . . 20 B.8. Since draft-iyengar-quic-loss-recovery-01 . . . . . . . . 20
Authors' Addresses . . . . . . . . . . . . . . . . . . . . . . . 21
1. Introduction 1. Introduction
QUIC is a new multiplexed and secure transport atop UDP. QUIC builds QUIC is a new multiplexed and secure transport atop UDP. QUIC builds
on decades of transport and security experience, and implements on decades of transport and security experience, and implements
mechanisms that make it attractive as a modern general-purpose mechanisms that make it attractive as a modern general-purpose
transport. The QUIC protocol is described in [QUIC-TRANSPORT]. transport. The QUIC protocol is described in [QUIC-TRANSPORT].
QUIC implements the spirit of known TCP loss recovery mechanisms, QUIC implements the spirit of known TCP loss recovery mechanisms,
described in RFCs, various Internet-drafts, and also those prevalent described in RFCs, various Internet-drafts, and also those prevalent
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[3] https://github.com/quicwg/base-drafts/labels/recovery [3] https://github.com/quicwg/base-drafts/labels/recovery
Appendix A. Acknowledgments Appendix A. Acknowledgments
Appendix B. Change Log Appendix B. Change Log
*RFC Editor's Note:* Please remove this section prior to *RFC Editor's Note:* Please remove this section prior to
publication of a final version of this document. publication of a final version of this document.
B.1. Since draft-ietf-quic-recovery-05 B.1. Since draft-ietf-quic-recovery-06
Nothing yet.
B.2. Since draft-ietf-quic-recovery-05
o Add more congestion control text (#776) o Add more congestion control text (#776)
B.2. Since draft-ietf-quic-recovery-04 B.3. Since draft-ietf-quic-recovery-04
No significant changes. No significant changes.
B.3. Since draft-ietf-quic-recovery-03 B.4. Since draft-ietf-quic-recovery-03
No significant changes. No significant changes.
B.4. Since draft-ietf-quic-recovery-02 B.5. Since draft-ietf-quic-recovery-02
o Integrate F-RTO (#544, #409) o Integrate F-RTO (#544, #409)
o Add congestion control (#545, #395) o Add congestion control (#545, #395)
o Require connection abort if a skipped packet was acknowledged o Require connection abort if a skipped packet was acknowledged
(#415) (#415)
o Simplify RTO calculations (#142, #417) o Simplify RTO calculations (#142, #417)
B.5. Since draft-ietf-quic-recovery-01 B.6. Since draft-ietf-quic-recovery-01
o Overview added to loss detection o Overview added to loss detection
o Changes initial default RTT to 100ms o Changes initial default RTT to 100ms
o Added time-based loss detection and fixes early retransmit o Added time-based loss detection and fixes early retransmit
o Clarified loss recovery for handshake packets o Clarified loss recovery for handshake packets
o Fixed references and made TCP references informative o Fixed references and made TCP references informative
B.6. Since draft-ietf-quic-recovery-00 B.7. Since draft-ietf-quic-recovery-00
o Improved description of constants and ACK behavior o Improved description of constants and ACK behavior
B.7. Since draft-iyengar-quic-loss-recovery-01 B.8. Since draft-iyengar-quic-loss-recovery-01
o Adopted as base for draft-ietf-quic-recovery o Adopted as base for draft-ietf-quic-recovery
o Updated authors/editors list o Updated authors/editors list
o Added table of contents o Added table of contents
Authors' Addresses Authors' Addresses
Jana Iyengar (editor) Jana Iyengar (editor)
Google Google
Email: jri@google.com Email: jri@google.com
Ian Swett (editor) Ian Swett (editor)
Google Google
Email: ianswett@google.com Email: ianswett@google.com
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