QUIC: A UDP-Based Multiplexed and Secure Transport
draft-ietf-quic-transport-32
QUIC J. Iyengar, Ed.
Internet-Draft Fastly
Intended status: Standards Track M. Thomson, Ed.
Expires: 23 April 2021 Mozilla
20 October 2020
QUIC: A UDP-Based Multiplexed and Secure Transport
draft-ietf-quic-transport-32
Abstract
This document defines the core of the QUIC transport protocol.
Accompanying documents describe QUIC's loss detection and congestion
control and the use of TLS for key negotiation.
Note to Readers
Discussion of this draft takes place on the QUIC working group
mailing list (quic@ietf.org (mailto: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.
Status of This Memo
This Internet-Draft is submitted in full conformance with the
provisions of BCP 78 and BCP 79.
Internet-Drafts are working documents of the Internet Engineering
Task Force (IETF). Note that other groups may also distribute
working documents as Internet-Drafts. The list of current Internet-
Drafts is at https://datatracker.ietf.org/drafts/current/.
Internet-Drafts are draft documents valid for a maximum of six months
and may be updated, replaced, or obsoleted by other documents at any
time. It is inappropriate to use Internet-Drafts as reference
material or to cite them other than as "work in progress."
This Internet-Draft will expire on 23 April 2021.
Copyright Notice
Copyright (c) 2020 IETF Trust and the persons identified as the
document authors. All rights reserved.
Iyengar & Thomson Expires 23 April 2021 [Page 1]
Internet-Draft QUIC Transport Protocol October 2020
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Table of Contents
1. Overview . . . . . . . . . . . . . . . . . . . . . . . . . . 7
1.1. Document Structure . . . . . . . . . . . . . . . . . . . 8
1.2. Terms and Definitions . . . . . . . . . . . . . . . . . . 9
1.3. Notational Conventions . . . . . . . . . . . . . . . . . 10
2. Streams . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
2.1. Stream Types and Identifiers . . . . . . . . . . . . . . 12
2.2. Sending and Receiving Data . . . . . . . . . . . . . . . 13
2.3. Stream Prioritization . . . . . . . . . . . . . . . . . . 13
2.4. Operations on Streams . . . . . . . . . . . . . . . . . . 14
3. Stream States . . . . . . . . . . . . . . . . . . . . . . . . 14
3.1. Sending Stream States . . . . . . . . . . . . . . . . . . 15
3.2. Receiving Stream States . . . . . . . . . . . . . . . . . 18
3.3. Permitted Frame Types . . . . . . . . . . . . . . . . . . 20
3.4. Bidirectional Stream States . . . . . . . . . . . . . . . 21
3.5. Solicited State Transitions . . . . . . . . . . . . . . . 22
4. Flow Control . . . . . . . . . . . . . . . . . . . . . . . . 24
4.1. Data Flow Control . . . . . . . . . . . . . . . . . . . . 24
4.2. Increasing Flow Control Limits . . . . . . . . . . . . . 25
4.3. Flow Control Performance . . . . . . . . . . . . . . . . 26
4.4. Handling Stream Cancellation . . . . . . . . . . . . . . 27
4.5. Stream Final Size . . . . . . . . . . . . . . . . . . . . 27
4.6. Controlling Concurrency . . . . . . . . . . . . . . . . . 28
5. Connections . . . . . . . . . . . . . . . . . . . . . . . . . 29
5.1. Connection ID . . . . . . . . . . . . . . . . . . . . . . 29
5.1.1. Issuing Connection IDs . . . . . . . . . . . . . . . 31
5.1.2. Consuming and Retiring Connection IDs . . . . . . . . 32
5.2. Matching Packets to Connections . . . . . . . . . . . . . 33
5.2.1. Client Packet Handling . . . . . . . . . . . . . . . 34
5.2.2. Server Packet Handling . . . . . . . . . . . . . . . 34
5.2.3. Considerations for Simple Load Balancers . . . . . . 35
5.3. Operations on Connections . . . . . . . . . . . . . . . . 36
6. Version Negotiation . . . . . . . . . . . . . . . . . . . . . 37
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