QUIC: A UDP-Based Multiplexed and Secure Transport
draft-ietf-quic-transport-26

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Document Type Active Internet-Draft (quic WG)
Last updated 2020-02-21 (latest revision 2020-01-21)
Replaces draft-ietf-quic-spin-exp, draft-hamilton-quic-transport-protocol
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Intended RFC status Proposed Standard
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QUIC                                                     J. Iyengar, Ed.
Internet-Draft                                                    Fastly
Intended status: Standards Track                         M. Thomson, Ed.
Expires: 24 August 2020                                          Mozilla
                                                        21 February 2020

           QUIC: A UDP-Based Multiplexed and Secure Transport
                      draft-ietf-quic-transport-26

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), 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 24 August 2020.

Copyright Notice

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

Iyengar & Thomson        Expires 24 August 2020                 [Page 1]
Internet-Draft           QUIC Transport Protocol           February 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
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   provided without warranty as described in the Simplified BSD License.

Table of Contents

   1.  Introduction  . . . . . . . . . . . . . . . . . . . . . . . .   6
     1.1.  Document Structure  . . . . . . . . . . . . . . . . . . .   6
     1.2.  Terms and Definitions . . . . . . . . . . . . . . . . . .   8
     1.3.  Notational Conventions  . . . . . . . . . . . . . . . . .   9
   2.  Streams . . . . . . . . . . . . . . . . . . . . . . . . . . .   9
     2.1.  Stream Types and Identifiers  . . . . . . . . . . . . . .  10
     2.2.  Sending and Receiving Data  . . . . . . . . . . . . . . .  11
     2.3.  Stream Prioritization . . . . . . . . . . . . . . . . . .  11
     2.4.  Required Operations on Streams  . . . . . . . . . . . . .  12
   3.  Stream States . . . . . . . . . . . . . . . . . . . . . . . .  12
     3.1.  Sending Stream States . . . . . . . . . . . . . . . . . .  13
     3.2.  Receiving Stream States . . . . . . . . . . . . . . . . .  15
     3.3.  Permitted Frame Types . . . . . . . . . . . . . . . . . .  18
     3.4.  Bidirectional Stream States . . . . . . . . . . . . . . .  18
     3.5.  Solicited State Transitions . . . . . . . . . . . . . . .  19
   4.  Flow Control  . . . . . . . . . . . . . . . . . . . . . . . .  21
     4.1.  Data Flow Control . . . . . . . . . . . . . . . . . . . .  21
     4.2.  Flow Credit Increments  . . . . . . . . . . . . . . . . .  22
     4.3.  Handling Stream Cancellation  . . . . . . . . . . . . . .  23
     4.4.  Stream Final Size . . . . . . . . . . . . . . . . . . . .  24
     4.5.  Controlling Concurrency . . . . . . . . . . . . . . . . .  24
   5.  Connections . . . . . . . . . . . . . . . . . . . . . . . . .  25
     5.1.  Connection ID . . . . . . . . . . . . . . . . . . . . . .  25
       5.1.1.  Issuing Connection IDs  . . . . . . . . . . . . . . .  26
       5.1.2.  Consuming and Retiring Connection IDs . . . . . . . .  27
     5.2.  Matching Packets to Connections . . . . . . . . . . . . .  28
       5.2.1.  Client Packet Handling  . . . . . . . . . . . . . . .  29
       5.2.2.  Server Packet Handling  . . . . . . . . . . . . . . .  29
     5.3.  Life of a QUIC Connection . . . . . . . . . . . . . . . .  30
     5.4.  Required Operations on Connections  . . . . . . . . . . .  31
   6.  Version Negotiation . . . . . . . . . . . . . . . . . . . . .  32
     6.1.  Sending Version Negotiation Packets . . . . . . . . . . .  32
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