QUIC: A UDP-Based Multiplexed and Secure Transport
draft-ietf-quic-transport-34

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QUIC                                                     J. Iyengar, Ed.
Internet-Draft                                                    Fastly
Intended status: Standards Track                         M. Thomson, Ed.
Expires: 19 July 2021                                            Mozilla
                                                         15 January 2021

           QUIC: A UDP-Based Multiplexed and Secure Transport
                      draft-ietf-quic-transport-34

Abstract

   This document defines the core of the QUIC transport protocol.  QUIC
   provides applications with flow-controlled streams for structured
   communication, low-latency connection establishment, and network path
   migration.  QUIC includes security measures that ensure
   confidentiality, integrity, and availability in a range of deployment
   circumstances.  Accompanying documents describe the integration of
   TLS for key negotiation, loss detection, and an exemplary congestion
   control algorithm.

DO NOT DEPLOY THIS VERSION OF QUIC

   DO NOT DEPLOY THIS VERSION OF QUIC UNTIL IT IS IN AN RFC.  This
   version is still a work in progress.  For trial deployments, please
   use earlier versions.

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/.

Iyengar & Thomson         Expires 19 July 2021                  [Page 1]
Internet-Draft           QUIC Transport Protocol            January 2021

   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 19 July 2021.

Copyright Notice

   Copyright (c) 2021 IETF Trust and the persons identified as the
   document authors.  All rights reserved.

   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.  Overview  . . . . . . . . . . . . . . . . . . . . . . . . . .   7
     1.1.  Document Structure  . . . . . . . . . . . . . . . . . . .   8
     1.2.  Terms and Definitions . . . . . . . . . . . . . . . . . .  10
     1.3.  Notational Conventions  . . . . . . . . . . . . . . . . .  11
   2.  Streams . . . . . . . . . . . . . . . . . . . . . . . . . . .  12
     2.1.  Stream Types and Identifiers  . . . . . . . . . . . . . .  13
     2.2.  Sending and Receiving Data  . . . . . . . . . . . . . . .  14
     2.3.  Stream Prioritization . . . . . . . . . . . . . . . . . .  14
     2.4.  Operations on Streams . . . . . . . . . . . . . . . . . .  15
   3.  Stream States . . . . . . . . . . . . . . . . . . . . . . . .  15
     3.1.  Sending Stream States . . . . . . . . . . . . . . . . . .  16
     3.2.  Receiving Stream States . . . . . . . . . . . . . . . . .  18
     3.3.  Permitted Frame Types . . . . . . . . . . . . . . . . . .  21
     3.4.  Bidirectional Stream States . . . . . . . . . . . . . . .  21
     3.5.  Solicited State Transitions . . . . . . . . . . . . . . .  23
   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