Unreliable Transmission Extension for HTTP/2 over QUIC
draft-tiesel-quic-unreliable-http-00

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QUIC Working Group                                             P. Tiesel
Internet-Draft                            Berlin Institute of Technology
Intended status: Informational                        September 05, 2017
Expires: March 9, 2018

         Unreliable Transmission Extension for HTTP/2 over QUIC
                  draft-tiesel-quic-unreliable-http-00

Abstract

   This draft outlines methods for requesting unreliable delivery of
   HTTP response bodies over QUIC with unreliable streams specified in
   [I-D.tiesel-quic-unreliable-streams].

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
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   Internet-Drafts are draft documents valid for a maximum of six months
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   This Internet-Draft will expire on March 9, 2018.

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   Copyright (c) 2017 IETF Trust and the persons identified as the
   document authors.  All rights reserved.

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Table of Contents

   1.  Conventions and Definitions . . . . . . . . . . . . . . . . .   2
   2.  Introduction  . . . . . . . . . . . . . . . . . . . . . . . .   2
   3.  General Concept . . . . . . . . . . . . . . . . . . . . . . .   2
   4.  Requesting Unreliable transmission  . . . . . . . . . . . . .   3
   5.  Stream Mapping  . . . . . . . . . . . . . . . . . . . . . . .   3
     5.1.  Stream Mapping for draft-ietf-quic-http-04  . . . . . . .   3
     5.2.  Stream Mapping for draft-ietf-quic-http-05  . . . . . . .   4
   6.  Security Considerations . . . . . . . . . . . . . . . . . . .   4
   7.  IANA Considerations . . . . . . . . . . . . . . . . . . . . .   4
   8.  References  . . . . . . . . . . . . . . . . . . . . . . . . .   4
     8.1.  Normative References  . . . . . . . . . . . . . . . . . .   4
     8.2.  Informative References  . . . . . . . . . . . . . . . . .   4
   Author's Address  . . . . . . . . . . . . . . . . . . . . . . . .   5

1.  Conventions and Definitions

   The words "MUST", "MUST NOT", "SHALL", "SHALL NOT", "SHOULD", and
   "MAY" are used in this document.  It's not shouting; when these words
   are capitalized, they have a special meaning as defined in [RFC2119].

2.  Introduction

   HTTP has become part of application protocols used for time sensitive
   applications such as video streaming and back-office ad auctions.
   These applications might have time constraints that can make
   retransmissions of lost frames useless.  Some of these applications
   can operate on partially delivered messages, but waiting for
   retransmissions blocks the delivery of data after a gap in the stream
   by design.

   This draft enables applications to request partial delivery of HTTP
   objects by allowing to disable retransmissions for HTTP response
   bodies.

3.  General Concept

   This draft specifies a new HTTP header for requesting unreliable
   delivery of the HTTP request body.  For answering requests including
   this header, the server uses unreliable QUIC streams as specified in
   [I-D.tiesel-quic-unreliable-streams] to transfer HTTP request bodies
   in a (partially) unreliable way.  To use the regular HTTP client
   logic, headers are always transferred reliably.

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4.  Requesting Unreliable transmission

   By adding the following header, an HTTP client can request unreliable
   transmission of the response body

   Transport-Response-Reliability: unreliable

   In case unreliable transmission should only be used to prevent
   retransmissions after a certain deadline, the client hat add the
   following header

   Transport-Response-Reliability: unreliable-after DATE

   Where DATE is either a relative offset in milliseconds or a date as
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