WebTransport over HTTP/3
draft-vvv-webtransport-http3-02

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Network Working Group                                        V. Vasiliev
Internet-Draft                                                    Google
Intended status: Standards Track                           June 30, 2020
Expires: January 1, 2021

                        WebTransport over HTTP/3
                    draft-vvv-webtransport-http3-02

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
   Http3Transport, 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/vasilvv/webtransport/issues>.  The web API draft
   corresponding to this document can be found at
   <https://wicg.github.io/web-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 January 1, 2021.

Vasiliev                 Expires January 1, 2021                [Page 1]
Internet-Draft               Http3Transport                    June 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 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 IDs . . . . . . . . . . . . . . . . . . . . . . . . .   4
   4.  Session Establishment . . . . . . . . . . . . . . . . . . . .   4
     4.1.  Establishing a Transport-Capable HTTP/3 Connection  . . .   4
     4.2.  Extended CONNECT in HTTP/3  . . . . . . . . . . . . . . .   5
     4.3.  Creating a New Session  . . . . . . . . . . . . . . . . .   5
     4.4.  Limiting the Number of Simultaneous Sessions  . . . . . .   6
   5.  WebTransport Features . . . . . . . . . . . . . . . . . . . .   6
     5.1.  Unidirectional streams  . . . . . . . . . . . . . . . . .   6
     5.2.  Client-Initiated Bidirectional Streams  . . . . . . . . .   7
     5.3.  Server-Initiated Bidirectional Streams  . . . . . . . . .   7
     5.4.  Datagrams . . . . . . . . . . . . . . . . . . . . . . . .   8
   6.  Session Termination . . . . . . . . . . . . . . . . . . . . .   8
   7.  Transport Properties  . . . . . . . . . . . . . . . . . . . .   8
   8.  Security Considerations . . . . . . . . . . . . . . . . . . .   9
   9.  IANA Considerations . . . . . . . . . . . . . . . . . . . . .   9
     9.1.  Upgrade Token Registration  . . . . . . . . . . . . . . .   9
     9.2.  QUIC Transport Parameter Registration . . . . . . . . . .  10
     9.3.  Frame Type Registration . . . . . . . . . . . . . . . . .  10
     9.4.  Stream Type Registration  . . . . . . . . . . . . . . . .  10
   10. References  . . . . . . . . . . . . . . . . . . . . . . . . .  11
     10.1.  Normative References . . . . . . . . . . . . . . . . . .  11
     10.2.  Informative References . . . . . . . . . . . . . . . . .  12
   Author's Address  . . . . . . . . . . . . . . . . . . . . . . . .  12

Vasiliev                 Expires January 1, 2021                [Page 2]
Internet-Draft               Http3Transport                    June 2020

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