Hypertext Transfer Protocol (HTTP/1.1): Range Requests
draft-ietf-httpbis-p5-range-25

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HTTPbis Working Group                                   R. Fielding, Ed.
Internet-Draft                                                     Adobe
Obsoletes: 2616 (if approved)                              Y. Lafon, Ed.
Intended status: Standards Track                                     W3C
Expires: May 21, 2014                                    J. Reschke, Ed.
                                                              greenbytes
                                                       November 17, 2013

         Hypertext Transfer Protocol (HTTP/1.1): Range Requests
                     draft-ietf-httpbis-p5-range-25

Abstract

   The Hypertext Transfer Protocol (HTTP) is an application-level
   protocol for distributed, collaborative, hypertext information
   systems.  This document defines range requests and the rules for
   constructing and combining responses to those requests.

Editorial Note (To be removed by RFC Editor)

   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/3> 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 E.1.

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
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   Internet-Drafts are draft documents valid for a maximum of six months
   and may be updated, replaced, or obsoleted by other documents at any
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   This Internet-Draft will expire on May 21, 2014.

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Copyright Notice

   Copyright (c) 2013 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
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   This document may contain material from IETF Documents or IETF
   Contributions published or made publicly available before November
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Table of Contents

   1.  Introduction . . . . . . . . . . . . . . . . . . . . . . . . .  4
     1.1.  Conformance and Error Handling . . . . . . . . . . . . . .  4
     1.2.  Syntax Notation  . . . . . . . . . . . . . . . . . . . . .  4
   2.  Range Units  . . . . . . . . . . . . . . . . . . . . . . . . .  4
     2.1.  Byte Ranges  . . . . . . . . . . . . . . . . . . . . . . .  5
     2.2.  Other Range Units  . . . . . . . . . . . . . . . . . . . .  7
     2.3.  Accept-Ranges  . . . . . . . . . . . . . . . . . . . . . .  7
   3.  Range Requests . . . . . . . . . . . . . . . . . . . . . . . .  7
     3.1.  Range  . . . . . . . . . . . . . . . . . . . . . . . . . .  7
     3.2.  If-Range . . . . . . . . . . . . . . . . . . . . . . . . .  9
   4.  Responses to a Range Request . . . . . . . . . . . . . . . . .  9
     4.1.  206 Partial Content  . . . . . . . . . . . . . . . . . . . 10
     4.2.  Content-Range  . . . . . . . . . . . . . . . . . . . . . . 12
     4.3.  Combining Ranges . . . . . . . . . . . . . . . . . . . . . 14