SPDY Protocol
draft-ietf-httpbis-http2-00

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Last updated 2012-11-29
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HTTPbis Working Group                                          M. Belshe
Internet-Draft                                                     Twist
Expires: June 1, 2013                                            R. Peon
                                                             Google, Inc
                                                         M. Thomson, Ed.
                                                               Microsoft
                                                        A. Melnikov, Ed.
                                                               Isode Ltd
                                                       November 28, 2012

                             SPDY Protocol
                      draft-ietf-httpbis-http2-00

Abstract

   This document describes SPDY, a protocol designed for low-latency
   transport of content over the World Wide Web. SPDY introduces two
   layers of protocol.  The lower layer is a general purpose framing
   layer which can be used atop a reliable transport (likely TCP) for
   multiplexed, prioritized, and compressed data communication of many
   concurrent streams.  The upper layer of the protocol provides HTTP-
   like RFC2616 [RFC2616] semantics for compatibility with existing HTTP
   application servers.

Editorial Note (To be removed by RFC Editor)

   This draft is a work-in-progress, and does not yet reflect Working
   Group consensus.

   This first draft uses the SPDY Protocol as a starting point, as per
   the Working Group's charter.  Future drafts will add, remove and
   change text, based upon the Working Group's decisions.

   Discussion of this draft takes place on the HTTPBIS working group
   mailing list (ietf-http-wg@w3.org), which is archived at
   <http://lists.w3.org/Archives/Public/ietf-http-wg/>.

   The current issues list is at
   <http://tools.ietf.org/wg/httpbis/trac/report/21> and related
   documents (including fancy diffs) can be found at
   <http://tools.ietf.org/wg/httpbis/>.

   The changes in this draft are summarized in Appendix A.1.

Status of This Memo

   This Internet-Draft is submitted in full conformance with the

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   provisions of BCP 78 and BCP 79.

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   This Internet-Draft will expire on June 1, 2013.

Copyright Notice

   Copyright (c) 2012 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
   (http://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.  Overview . . . . . . . . . . . . . . . . . . . . . . . . . . .  4
     1.1.  Document Organization  . . . . . . . . . . . . . . . . . .  4
     1.2.  Definitions  . . . . . . . . . . . . . . . . . . . . . . .  5
   2.  SPDY Framing Layer . . . . . . . . . . . . . . . . . . . . . .  5
     2.1.  Session (Connections)  . . . . . . . . . . . . . . . . . .  5
     2.2.  Framing  . . . . . . . . . . . . . . . . . . . . . . . . .  5
       2.2.1.  Control frames . . . . . . . . . . . . . . . . . . . .  6
       2.2.2.  Data frames  . . . . . . . . . . . . . . . . . . . . .  7
     2.3.  Streams  . . . . . . . . . . . . . . . . . . . . . . . . .  8
       2.3.1.  Stream frames  . . . . . . . . . . . . . . . . . . . .  8
       2.3.2.  Stream creation  . . . . . . . . . . . . . . . . . . .  8
       2.3.3.  Stream priority  . . . . . . . . . . . . . . . . . . .  9
       2.3.4.  Stream headers . . . . . . . . . . . . . . . . . . . .  9
       2.3.5.  Stream data exchange . . . . . . . . . . . . . . . . . 10
       2.3.6.  Stream half-close  . . . . . . . . . . . . . . . . . . 10
       2.3.7.  Stream close . . . . . . . . . . . . . . . . . . . . . 10
     2.4.  Error Handling . . . . . . . . . . . . . . . . . . . . . . 11

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