Version-Independent Properties of QUIC
draft-ietf-quic-invariants-09
QUIC M. Thomson
Internet-Draft Mozilla
Intended status: Standards Track 9 June 2020
Expires: 11 December 2020
Version-Independent Properties of QUIC
draft-ietf-quic-invariants-09
Abstract
This document defines the properties of the QUIC transport protocol
that are expected to remain unchanged over time as new versions of
the protocol are developed.
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/-invariants.
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
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Internet-Drafts are draft documents valid for a maximum of six months
and may be updated, replaced, or obsoleted by other documents at any
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This Internet-Draft will expire on 11 December 2020.
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
2. Conventions and Definitions . . . . . . . . . . . . . . . . . 3
3. An Extremely Abstract Description of QUIC . . . . . . . . . . 3
4. Notational Conventions . . . . . . . . . . . . . . . . . . . 3
5. QUIC Packet Headers . . . . . . . . . . . . . . . . . . . . . 4
5.1. Long Header . . . . . . . . . . . . . . . . . . . . . . . 4
5.2. Short Header . . . . . . . . . . . . . . . . . . . . . . 5
5.3. Connection ID . . . . . . . . . . . . . . . . . . . . . . 5
5.4. Version . . . . . . . . . . . . . . . . . . . . . . . . . 6
6. Version Negotiation . . . . . . . . . . . . . . . . . . . . . 6
7. Security and Privacy Considerations . . . . . . . . . . . . . 7
8. IANA Considerations . . . . . . . . . . . . . . . . . . . . . 8
9. References . . . . . . . . . . . . . . . . . . . . . . . . . 8
9.1. Normative References . . . . . . . . . . . . . . . . . . 8
9.2. Informative References . . . . . . . . . . . . . . . . . 8
Appendix A. Incorrect Assumptions . . . . . . . . . . . . . . . 8
Author's Address . . . . . . . . . . . . . . . . . . . . . . . . 10
1. Introduction
In addition to providing secure, multiplexed transport, QUIC
[QUIC-TRANSPORT] includes the ability to negotiate a version. This
allows the protocol to change over time in response to new
requirements. Many characteristics of the protocol will change
between versions.
This document describes the subset of QUIC that is intended to remain
stable as new versions are developed and deployed. All of these
invariants are IP-version-independent.
The primary goal of this document is to ensure that it is possible to
deploy new versions of QUIC. By documenting the properties that
can't change, this document aims to preserve the ability to change
any other aspect of the protocol. Thus, unless specifically
described in this document, any aspect of the protocol can change
between different versions.
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Appendix A is a non-exhaustive list of some incorrect assumptions
that might be made based on knowledge of QUIC version 1; these do not
apply to every version of QUIC.
2. Conventions and Definitions
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