WebTransport over HTTP/3
draft-ietf-webtrans-http3-00

Document Type Active Internet-Draft (webtrans WG)
Author Victor Vasiliev 
Last updated 2021-02-17
Replaces draft-vvv-webtransport-http3
Stream Internent Engineering Task Force (IETF)
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Network Working Group                                        V. Vasiliev
Internet-Draft                                                    Google
Intended status: Standards Track                        17 February 2021
Expires: 21 August 2021

                        WebTransport over HTTP/3
                      draft-ietf-webtrans-http3-00

Abstract

   WebTransport [OVERVIEW] is a protocol framework that enables clients
   constrained by the Web security model to communicate with a remote
   server using a secure multiplexed transport.  This document describes
   a WebTransport protocol that is based on HTTP/3 [HTTP3] and provides
   support for unidirectional streams, bidirectional streams and
   datagrams, all multiplexed within the same HTTP/3 connection.

Note to Readers

   Discussion of this draft takes place on the WebTransport mailing list
   (webtransport@ietf.org), which is archived at
   <https://mailarchive.ietf.org/arch/search/?email_list=webtransport>.

   The repository tracking the issues for this draft can be found at
   <https://github.com/ietf-wg-webtrans/draft-ietf-webtrans-http3/
   issues>.  The web API draft corresponding to this document can be
   found at <https://w3c.github.io/webtransport/>.

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 21 August 2021.

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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.  Introduction  . . . . . . . . . . . . . . . . . . . . . . . .   3
     1.1.  Terminology . . . . . . . . . . . . . . . . . . . . . . .   3
   2.  Protocol Overview . . . . . . . . . . . . . . . . . . . . . .   3
   3.  Session Establishment . . . . . . . . . . . . . . . . . . . .   4
     3.1.  Establishing a Transport-Capable HTTP/3 Connection  . . .   4
     3.2.  Extended CONNECT in HTTP/3  . . . . . . . . . . . . . . .   4
     3.3.  Creating a New Session  . . . . . . . . . . . . . . . . .   5
     3.4.  Limiting the Number of Simultaneous Sessions  . . . . . .   5
   4.  WebTransport Features . . . . . . . . . . . . . . . . . . . .   6
     4.1.  Unidirectional streams  . . . . . . . . . . . . . . . . .   6
     4.2.  Client-Initiated Bidirectional Streams  . . . . . . . . .   6
     4.3.  Server-Initiated Bidirectional Streams  . . . . . . . . .   7
     4.4.  Datagrams . . . . . . . . . . . . . . . . . . . . . . . .   7
   5.  Session Termination . . . . . . . . . . . . . . . . . . . . .   8
   6.  Security Considerations . . . . . . . . . . . . . . . . . . .   8
   7.  IANA Considerations . . . . . . . . . . . . . . . . . . . . .   9
     7.1.  Upgrade Token Registration  . . . . . . . . . . . . . . .   9
     7.2.  HTTP/3 SETTINGS Parameter Registration  . . . . . . . . .   9
     7.3.  Frame Type Registration . . . . . . . . . . . . . . . . .   9
     7.4.  Stream Type Registration  . . . . . . . . . . . . . . . .  10
   8.  References  . . . . . . . . . . . . . . . . . . . . . . . . .  10
     8.1.  Normative References  . . . . . . . . . . . . . . . . . .  10
     8.2.  Informative References  . . . . . . . . . . . . . . . . .  12
   Author's Address  . . . . . . . . . . . . . . . . . . . . . . . .  12

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1.  Introduction

   HTTP/3 [HTTP3] is a protocol defined on top of QUIC [QUIC-TRANSPORT]
   that can multiplex HTTP requests over a QUIC connection.  This
   document defines a mechanism for multiplexing non-HTTP data with
   HTTP/3 in a manner that conforms with the WebTransport protocol
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