An Unreliable Datagram Extension to QUIC
draft-ietf-quic-datagram-00

Document Type Active Internet-Draft (quic WG)
Last updated 2020-03-09 (latest revision 2020-02-26)
Replaces draft-pauly-quic-datagram
Stream IETF
Intended RFC status Proposed Standard
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Stream WG state WG Document (wg milestone: Mar 2021 - Datagram Extension t... )
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Network Working Group                                           T. Pauly
Internet-Draft                                                E. Kinnear
Intended status: Standards Track                              Apple Inc.
Expires: 29 August 2020                                      D. Schinazi
                                                              Google LLC
                                                        26 February 2020

                An Unreliable Datagram Extension to QUIC
                      draft-ietf-quic-datagram-00

Abstract

   This document defines an extension to the QUIC transport protocol to
   add support for sending and receiving unreliable datagrams over a
   QUIC connection.

   Discussion of this work is encouraged to happen on the QUIC IETF
   mailing list quic@ietf.org (mailto:quic@ietf.org) or on the GitHub
   repository which contains the draft: https://github.com/quicwg/
   datagram (https://github.com/quicwg/datagram).

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 August 2020.

Copyright Notice

   Copyright (c) 2020 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

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   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.  Introduction  . . . . . . . . . . . . . . . . . . . . . . . .   2
     1.1.  Specification of Requirements . . . . . . . . . . . . . .   3
   2.  Motivation  . . . . . . . . . . . . . . . . . . . . . . . . .   3
   3.  Transport Parameter . . . . . . . . . . . . . . . . . . . . .   4
   4.  Datagram Frame Type . . . . . . . . . . . . . . . . . . . . .   5
   5.  Behavior and Usage  . . . . . . . . . . . . . . . . . . . . .   5
     5.1.  Acknowledgement Handling  . . . . . . . . . . . . . . . .   6
     5.2.  Flow Control  . . . . . . . . . . . . . . . . . . . . . .   6
     5.3.  Congestion Control  . . . . . . . . . . . . . . . . . . .   7
   6.  Security Considerations . . . . . . . . . . . . . . . . . . .   7
   7.  IANA Considerations . . . . . . . . . . . . . . . . . . . . .   7
   8.  Acknowledgments . . . . . . . . . . . . . . . . . . . . . . .   8
   9.  References  . . . . . . . . . . . . . . . . . . . . . . . . .   8
     9.1.  Normative References  . . . . . . . . . . . . . . . . . .   8
     9.2.  Informative References  . . . . . . . . . . . . . . . . .   8
   Authors' Addresses  . . . . . . . . . . . . . . . . . . . . . . .   9

1.  Introduction

   The QUIC Transport Protocol [I-D.ietf-quic-transport] provides a
   secure, multiplexed connection for transmitting reliable streams of
   application data.  Reliability within QUIC is performed on a per-
   stream basis, so some frame types are not eligible for
   retransmission.

   Some applications, particularly those that need to transmit real-time
   data, prefer to transmit data unreliably.  These applications can
   build directly upon UDP [RFC0768] as a transport, and can add
   security with DTLS [RFC6347].  Extending QUIC to support transmitting
   unreliable application data would provide another option for secure
   datagrams, with the added benefit of sharing a cryptographic and
   authentication context used for reliable streams.

   This document defines two new DATAGRAM QUIC frame types, which carry
   application data without requiring retransmissions.

   Discussion of this work is encouraged to happen on the QUIC IETF
   mailing list quic@ietf.org (mailto:quic@ietf.org) or on the GitHub
   repository which contains the draft: https://github.com/quicwg/
   datagram (https://github.com/quicwg/datagram).

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