The WebTransport Protocol Framework
draft-ietf-webtrans-overview-01

Document Type Active Internet-Draft (webtrans WG)
Author Victor Vasiliev 
Last updated 2020-10-18
Replaces draft-vvv-webtransport-overview
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WEBTRANS                                                     V. Vasiliev
Internet-Draft                                                    Google
Intended status: Standards Track                         18 October 2020
Expires: 21 April 2021

                  The WebTransport Protocol Framework
                    draft-ietf-webtrans-overview-01

Abstract

   The WebTransport Protocol Framework enables clients constrained by
   the Web security model to communicate with a remote server using a
   secure multiplexed transport.  It consists of a set of individual
   protocols that are safe to expose to untrusted applications, combined
   with a model that allows them to be used interchangeably.

   This document defines the overall requirements on the protocols used
   in WebTransport, as well as the common features of the protocols,
   support for some of which may be optional.

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-overview/
   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 21 April 2021.

Vasiliev                  Expires 21 April 2021                 [Page 1]
Internet-Draft                WebTransport                  October 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  . . . . . . . . . . . . . . . . . . . . . . . .   2
     1.1.  Background  . . . . . . . . . . . . . . . . . . . . . . .   3
     1.2.  Conventions and Definitions . . . . . . . . . . . . . . .   4
   2.  Common Transport Requirements . . . . . . . . . . . . . . . .   5
   3.  Session Establishment . . . . . . . . . . . . . . . . . . . .   6
   4.  Transport Features  . . . . . . . . . . . . . . . . . . . . .   6
     4.1.  Datagrams . . . . . . . . . . . . . . . . . . . . . . . .   7
     4.2.  Streams . . . . . . . . . . . . . . . . . . . . . . . . .   7
     4.3.  Protocol-Specific Features  . . . . . . . . . . . . . . .   8
     4.4.  Bandwidth Prediction  . . . . . . . . . . . . . . . . . .   8
   5.  Buffering and Prioritization  . . . . . . . . . . . . . . . .   8
   6.  Transport Properties  . . . . . . . . . . . . . . . . . . . .   9
   7.  Security Considerations . . . . . . . . . . . . . . . . . . .   9
   8.  IANA Considerations . . . . . . . . . . . . . . . . . . . . .  10
   9.  References  . . . . . . . . . . . . . . . . . . . . . . . . .  10
     9.1.  Normative References  . . . . . . . . . . . . . . . . . .  10
     9.2.  Informative References  . . . . . . . . . . . . . . . . .  10
   Author's Address  . . . . . . . . . . . . . . . . . . . . . . . .  12

1.  Introduction

   The WebTransport Protocol Framework enables clients constrained by
   the Web security model to communicate with a remote server using a
   secure multiplexed transport.  It consists of a set of individual
   protocols that are safe to expose to untrusted applications, combined
   with a model that allows them to be used interchangeably.

   This document defines the overall requirements on the protocols used
   in WebTransport, as well as the common features of the protocols,
   support for some of which may be optional.

Vasiliev                  Expires 21 April 2021                 [Page 2]
Internet-Draft                WebTransport                  October 2020

1.1.  Background

   Historically, web applications that needed a bidirectional data
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