Hypertext Transfer Protocol Version 3 (HTTP/3)
draft-ietf-quic-http-17
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QUIC M. Bishop, Ed.
Internet-Draft Akamai
Intended status: Standards Track December 18, 2018
Expires: June 21, 2019
Hypertext Transfer Protocol Version 3 (HTTP/3)
draft-ietf-quic-http-17
Abstract
The QUIC transport protocol has several features that are desirable
in a transport for HTTP, such as stream multiplexing, per-stream flow
control, and low-latency connection establishment. This document
describes a mapping of HTTP semantics over QUIC. This document also
identifies HTTP/2 features that are subsumed by QUIC, and describes
how HTTP/2 extensions can be ported to HTTP/3.
Note to Readers
Discussion of this draft takes place on the QUIC working group
mailing list (quic@ietf.org), which is archived at
https://mailarchive.ietf.org/arch/search/?email_list=quic [1].
Working Group information can be found at https://github.com/quicwg
[2]; source code and issues list for this draft can be found at
https://github.com/quicwg/base-drafts/labels/-http [3].
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 June 21, 2019.
Bishop Expires June 21, 2019 [Page 1]
Internet-Draft HTTP/3 December 2018
Copyright Notice
Copyright (c) 2018 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 . . . . . . . . . . . . . . . . . . . . . . . . 4
1.1. Notational Conventions . . . . . . . . . . . . . . . . . 4
2. Connection Setup and Management . . . . . . . . . . . . . . . 5
2.1. Draft Version Identification . . . . . . . . . . . . . . 5
2.2. Discovering an HTTP/3 Endpoint . . . . . . . . . . . . . 5
2.2.1. QUIC Version Hints . . . . . . . . . . . . . . . . . 6
2.3. Connection Establishment . . . . . . . . . . . . . . . . 6
2.4. Connection Reuse . . . . . . . . . . . . . . . . . . . . 7
3. Stream Mapping and Usage . . . . . . . . . . . . . . . . . . 7
3.1. Bidirectional Streams . . . . . . . . . . . . . . . . . . 8
3.2. Unidirectional Streams . . . . . . . . . . . . . . . . . 8
3.2.1. Control Streams . . . . . . . . . . . . . . . . . . . 9
3.2.2. Push Streams . . . . . . . . . . . . . . . . . . . . 9
3.2.3. Reserved Stream Types . . . . . . . . . . . . . . . . 10
4. HTTP Framing Layer . . . . . . . . . . . . . . . . . . . . . 10
4.1. Frame Layout . . . . . . . . . . . . . . . . . . . . . . 10
4.2. Frame Definitions . . . . . . . . . . . . . . . . . . . . 11
4.2.1. DATA . . . . . . . . . . . . . . . . . . . . . . . . 11
4.2.2. HEADERS . . . . . . . . . . . . . . . . . . . . . . . 12
4.2.3. PRIORITY . . . . . . . . . . . . . . . . . . . . . . 12
4.2.4. CANCEL_PUSH . . . . . . . . . . . . . . . . . . . . . 14
4.2.5. SETTINGS . . . . . . . . . . . . . . . . . . . . . . 15
4.2.6. PUSH_PROMISE . . . . . . . . . . . . . . . . . . . . 18
4.2.7. GOAWAY . . . . . . . . . . . . . . . . . . . . . . . 18
4.2.8. MAX_PUSH_ID . . . . . . . . . . . . . . . . . . . . . 19
4.2.9. DUPLICATE_PUSH . . . . . . . . . . . . . . . . . . . 20
4.2.10. Reserved Frame Types . . . . . . . . . . . . . . . . 21
5. HTTP Request Lifecycle . . . . . . . . . . . . . . . . . . . 21
5.1. HTTP Message Exchanges . . . . . . . . . . . . . . . . . 21
5.1.1. Header Formatting and Compression . . . . . . . . . . 22
5.1.2. Request Cancellation . . . . . . . . . . . . . . . . 23
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