Version-Independent Properties of QUIC
draft-ietf-quic-invariants-11

Document Type Active Internet-Draft (quic WG)
Author Martin Thomson 
Last updated 2020-10-21 (latest revision 2020-09-24)
Replaces draft-thomson-quic-invariants
Stream IETF
Intended RFC status Proposed Standard
Formats plain text html xml pdf htmlized (tools) htmlized bibtex
Reviews
Stream WG state Submitted to IESG for Publication (wg milestone: Jul 2020 - Version-Independent ... )
Document shepherd Mark Nottingham
Shepherd write-up Show (last changed 2020-09-25)
IESG IESG state In Last Call (ends 2020-11-16)
Consensus Boilerplate Yes
Telechat date
Responsible AD Magnus Westerlund
Send notices to quic-chairs@ietf.org
IANA IANA review state IANA - Review Needed
QUIC                                                          M. Thomson
Internet-Draft                                                   Mozilla
Intended status: Standards Track                       25 September 2020
Expires: 29 March 2021

                 Version-Independent Properties of QUIC
                     draft-ietf-quic-invariants-11

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
   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 29 March 2021.

Copyright Notice

   Copyright (c) 2020 IETF Trust and the persons identified as the
   document authors.  All rights reserved.

Thomson                   Expires 29 March 2021                 [Page 1]
Internet-Draft               QUIC Invariants              September 2020

   This document is subject to BCP 78 and the IETF Trust's Legal
   Provisions Relating to IETF Documents (https://trustee.ietf.org/
   license-info) in effect on the date of publication of this document.
   Please review these documents carefully, as they describe your rights
   and restrictions with respect to this document.  Code Components
   extracted from this document must include Simplified BSD License text
   as described in Section 4.e of the Trust Legal Provisions and are
   provided without warranty as described in the Simplified BSD License.

Table of Contents

   1.  An Extremely Abstract Description of QUIC . . . . . . . . . .   2
   2.  Fixed Properties of All QUIC Versions . . . . . . . . . . . .   2
   3.  Conventions and Definitions . . . . . . . . . . . . . . . . .   3
   4.  Notational Conventions  . . . . . . . . . . . . . . . . . . .   3
   5.  QUIC Packets  . . . . . . . . . . . . . . . . . . . . . . . .   4
     5.1.  Long Header . . . . . . . . . . . . . . . . . . . . . . .   4
     5.2.  Short Header  . . . . . . . . . . . . . . . . . . . . . .   5
     5.3.  Connection ID . . . . . . . . . . . . . . . . . . . . . .   6
     5.4.  Version . . . . . . . . . . . . . . . . . . . . . . . . .   6
   6.  Version Negotiation . . . . . . . . . . . . . . . . . . . . .   6
   7.  Security and Privacy Considerations . . . . . . . . . . . . .   8
   8.  IANA Considerations . . . . . . . . . . . . . . . . . . . . .   8
   9.  References  . . . . . . . . . . . . . . . . . . . . . . . . .   8
     9.1.  Normative References  . . . . . . . . . . . . . . . . . .   8
     9.2.  Informative References  . . . . . . . . . . . . . . . . .   8
   Appendix A.  Incorrect Assumptions  . . . . . . . . . . . . . . .   9
   Author's Address  . . . . . . . . . . . . . . . . . . . . . . . .  10

1.  An Extremely Abstract Description of QUIC

   QUIC is a connection-oriented protocol between two endpoints.  Those
   endpoints exchange UDP datagrams.  These UDP datagrams contain QUIC
   packets.  QUIC endpoints use QUIC packets to establish a QUIC
   connection, which is shared protocol state between those endpoints.

2.  Fixed Properties of All QUIC Versions

   In addition to providing secure, multiplexed transport, QUIC
   [QUIC-TRANSPORT] allows for the option to negotiate a version.  This
   allows the protocol to change over time in response to new
   requirements.  Many characteristics of the protocol could 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.

Thomson                   Expires 29 March 2021                 [Page 2]
Internet-Draft               QUIC Invariants              September 2020

   The primary goal of this document is to ensure that it is possible to
   deploy new versions of QUIC.  By documenting the properties that
   cannot change, this document aims to preserve the ability for QUIC
   endpoints to negotiate changes to any other aspect of the protocol.
Show full document text