Sender Control of Acknowledgement Delays in QUIC
draft-iyengar-quic-delayed-ack-02
QUIC J. Iyengar
Internet-Draft Fastly
Intended status: Standards Track I. Swett
Expires: 6 May 2021 Google
2 November 2020
Sender Control of Acknowledgement Delays in QUIC
draft-iyengar-quic-delayed-ack-02
Abstract
This document describes a QUIC extension for an endpoint to control
its peer's delaying of acknowledgements.
Note to Readers
Discussion of this draft takes place on the QUIC working group
mailing list (quic@ietf.org), which is archived at
<https://mailarchive.ietf.org/arch/search/?email_list=quic>.
Working Group information can be found at <https://github.com/
quicwg>; source code and issues list for this draft can be found at
<https://github.com/quicwg/base-drafts/labels/-transport>.
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Copyright Notice
Copyright (c) 2020 IETF Trust and the persons identified as the
document authors. All rights reserved.
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Table of Contents
1. Introduction . . . . . . . . . . . . . . . . . . . . . . . . 2
1.1. Terms and Definitions . . . . . . . . . . . . . . . . . . 2
2. Motivation . . . . . . . . . . . . . . . . . . . . . . . . . 3
3. Negotiating Extension Use . . . . . . . . . . . . . . . . . . 4
4. ACK_FREQUENCY Frame . . . . . . . . . . . . . . . . . . . . . 4
5. Multiple ACK_FREQUENCY Frames . . . . . . . . . . . . . . . . 5
6. Sending Acknowledgments . . . . . . . . . . . . . . . . . . . 6
6.1. Response to Reordering . . . . . . . . . . . . . . . . . 7
6.2. Expediting Congestion Signals . . . . . . . . . . . . . . 7
6.3. Batch Processing of Packets . . . . . . . . . . . . . . . 7
7. Computation of Probe Timeout Period . . . . . . . . . . . . . 7
8. Implementation Considerations . . . . . . . . . . . . . . . . 8
8.1. Loss Detection . . . . . . . . . . . . . . . . . . . . . 8
8.2. New Connections . . . . . . . . . . . . . . . . . . . . . 8
8.3. Window-based Congestion Controllers . . . . . . . . . . . 8
9. Security Considerations . . . . . . . . . . . . . . . . . . . 9
10. IANA Considerations . . . . . . . . . . . . . . . . . . . . . 9
11. Normative References . . . . . . . . . . . . . . . . . . . . 9
Appendix A. Change Log . . . . . . . . . . . . . . . . . . . . . 9
Acknowledgments . . . . . . . . . . . . . . . . . . . . . . . . . 9
Authors' Addresses . . . . . . . . . . . . . . . . . . . . . . . 9
1. Introduction
This document describes a QUIC extension for an endpoint to control
its peer's delaying of acknowledgements.
1.1. Terms and Definitions
The keywords "MUST", "MUST NOT", "REQUIRED", "SHALL", "SHALL NOT",
"SHOULD", "SHOULD NOT", "RECOMMENDED", "NOT RECOMMENDED", "MAY", and
"OPTIONAL" in this document are to be interpreted as described in BCP
14 [RFC2119] [RFC8174] when, and only when, they appear in all
capitals, as shown here.
In the rest of this document, "sender" refers to a QUIC data sender
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(and acknowledgement receiver). Similarly, "receiver" refers to a
QUIC data receiver (and acknowledgement sender).
An "acknowledgement packet" refers to a QUIC packet that contains
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