draft-ietf-httpbis-p4-conditional-26.txt   draft-ietf-httpbis-p4-conditional-latest.txt 
HTTPbis Working Group R. Fielding, Ed. HTTPbis Working Group R. Fielding, Ed.
Internet-Draft Adobe Internet-Draft Adobe
Obsoletes: 2616 (if approved) J. Reschke, Ed. Obsoletes: 2616 (if approved) J. Reschke, Ed.
Intended status: Standards Track greenbytes Intended status: Standards Track greenbytes
Expires: August 10, 2014 February 6, 2014 Expires: October 19, 2014 April 17, 2014
Hypertext Transfer Protocol (HTTP/1.1): Conditional Requests Hypertext Transfer Protocol (HTTP/1.1): Conditional Requests
draft-ietf-httpbis-p4-conditional-26 draft-ietf-httpbis-p4-conditional-latest
Abstract Abstract
The Hypertext Transfer Protocol (HTTP) is a stateless application- The Hypertext Transfer Protocol (HTTP) is a stateless application-
level protocol for distributed, collaborative, hypertext information level protocol for distributed, collaborative, hypertext information
systems. This document defines HTTP/1.1 conditional requests, systems. This document defines HTTP/1.1 conditional requests,
including metadata header fields for indicating state changes, including metadata header fields for indicating state changes,
request header fields for making preconditions on such state, and request header fields for making preconditions on such state, and
rules for constructing the responses to a conditional request when rules for constructing the responses to a conditional request when
one or more preconditions evaluate to false. one or more preconditions evaluate to false.
skipping to change at page 1, line 33 skipping to change at page 1, line 33
Discussion of this draft takes place on the HTTPBIS working group Discussion of this draft takes place on the HTTPBIS working group
mailing list (ietf-http-wg@w3.org), which is archived at mailing list (ietf-http-wg@w3.org), which is archived at
<http://lists.w3.org/Archives/Public/ietf-http-wg/>. <http://lists.w3.org/Archives/Public/ietf-http-wg/>.
The current issues list is at The current issues list is at
<http://tools.ietf.org/wg/httpbis/trac/report/3> and related <http://tools.ietf.org/wg/httpbis/trac/report/3> and related
documents (including fancy diffs) can be found at documents (including fancy diffs) can be found at
<http://tools.ietf.org/wg/httpbis/>. <http://tools.ietf.org/wg/httpbis/>.
The changes in this draft are summarized in Appendix D.2. The changes in this draft are summarized in Appendix D.3.
Status of This Memo Status of This Memo
This Internet-Draft is submitted in full conformance with the This Internet-Draft is submitted in full conformance with the
provisions of BCP 78 and BCP 79. provisions of BCP 78 and BCP 79.
Internet-Drafts are working documents of the Internet Engineering Internet-Drafts are working documents of the Internet Engineering
Task Force (IETF). Note that other groups may also distribute Task Force (IETF). Note that other groups may also distribute
working documents as Internet-Drafts. The list of current Internet- working documents as Internet-Drafts. The list of current Internet-
Drafts is at http://datatracker.ietf.org/drafts/current/. Drafts is at http://datatracker.ietf.org/drafts/current/.
Internet-Drafts are draft documents valid for a maximum of six months Internet-Drafts are draft documents valid for a maximum of six months
and may be updated, replaced, or obsoleted by other documents at any and may be updated, replaced, or obsoleted by other documents at any
time. It is inappropriate to use Internet-Drafts as reference time. It is inappropriate to use Internet-Drafts as reference
material or to cite them other than as "work in progress." material or to cite them other than as "work in progress."
This Internet-Draft will expire on August 10, 2014. This Internet-Draft will expire on October 19, 2014.
Copyright Notice Copyright Notice
Copyright (c) 2014 IETF Trust and the persons identified as the Copyright (c) 2014 IETF Trust and the persons identified as the
document authors. All rights reserved. document authors. All rights reserved.
This document is subject to BCP 78 and the IETF Trust's Legal This document is subject to BCP 78 and the IETF Trust's Legal
Provisions Relating to IETF Documents Provisions Relating to IETF Documents
(http://trustee.ietf.org/license-info) in effect on the date of (http://trustee.ietf.org/license-info) in effect on the date of
publication of this document. Please review these documents publication of this document. Please review these documents
skipping to change at page 3, line 47 skipping to change at page 3, line 47
10. References . . . . . . . . . . . . . . . . . . . . . . . . . . 23 10. References . . . . . . . . . . . . . . . . . . . . . . . . . . 23
10.1. Normative References . . . . . . . . . . . . . . . . . . . 23 10.1. Normative References . . . . . . . . . . . . . . . . . . . 23
10.2. Informative References . . . . . . . . . . . . . . . . . . 23 10.2. Informative References . . . . . . . . . . . . . . . . . . 23
Appendix A. Changes from RFC 2616 . . . . . . . . . . . . . . . . 23 Appendix A. Changes from RFC 2616 . . . . . . . . . . . . . . . . 23
Appendix B. Imported ABNF . . . . . . . . . . . . . . . . . . . . 24 Appendix B. Imported ABNF . . . . . . . . . . . . . . . . . . . . 24
Appendix C. Collected ABNF . . . . . . . . . . . . . . . . . . . 24 Appendix C. Collected ABNF . . . . . . . . . . . . . . . . . . . 24
Appendix D. Change Log (to be removed by RFC Editor before Appendix D. Change Log (to be removed by RFC Editor before
publication) . . . . . . . . . . . . . . . . . . . . 25 publication) . . . . . . . . . . . . . . . . . . . . 25
D.1. Since draft-ietf-httpbis-p4-conditional-24 . . . . . . . . 25 D.1. Since draft-ietf-httpbis-p4-conditional-24 . . . . . . . . 25
D.2. Since draft-ietf-httpbis-p4-conditional-25 . . . . . . . . 25 D.2. Since draft-ietf-httpbis-p4-conditional-25 . . . . . . . . 25
D.3. Since draft-ietf-httpbis-p4-conditional-26 . . . . . . . . 26
Index . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26 Index . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
1. Introduction 1. Introduction
Conditional requests are HTTP requests [Part2] that include one or Conditional requests are HTTP requests [Part2] that include one or
more header fields indicating a precondition to be tested before more header fields indicating a precondition to be tested before
applying the method semantics to the target resource. This document applying the method semantics to the target resource. This document
defines the HTTP/1.1 conditional request mechanisms in terms of the defines the HTTP/1.1 conditional request mechanisms in terms of the
architecture, syntax notation, and conformance criteria defined in architecture, syntax notation, and conformance criteria defined in
[Part1]. [Part1].
skipping to change at page 23, line 8 skipping to change at page 23, line 8
9. Acknowledgments 9. Acknowledgments
See Section 10 of [Part1]. See Section 10 of [Part1].
10. References 10. References
10.1. Normative References 10.1. Normative References
[Part1] Fielding, R., Ed. and J. Reschke, Ed., "Hypertext Transfer [Part1] Fielding, R., Ed. and J. Reschke, Ed., "Hypertext Transfer
Protocol (HTTP/1.1): Message Syntax and Routing", Protocol (HTTP/1.1): Message Syntax and Routing",
draft-ietf-httpbis-p1-messaging-26 (work in progress), draft-ietf-httpbis-p1-messaging-latest (work in progress),
February 2014. April 2014.
[Part2] Fielding, R., Ed. and J. Reschke, Ed., "Hypertext Transfer [Part2] Fielding, R., Ed. and J. Reschke, Ed., "Hypertext Transfer
Protocol (HTTP/1.1): Semantics and Content", Protocol (HTTP/1.1): Semantics and Content",
draft-ietf-httpbis-p2-semantics-26 (work in progress), draft-ietf-httpbis-p2-semantics-latest (work in progress),
February 2014. April 2014.
[Part5] Fielding, R., Ed., Lafon, Y., Ed., and J. Reschke, Ed., [Part5] Fielding, R., Ed., Lafon, Y., Ed., and J. Reschke, Ed.,
"Hypertext Transfer Protocol (HTTP/1.1): Range Requests", "Hypertext Transfer Protocol (HTTP/1.1): Range Requests",
draft-ietf-httpbis-p5-range-26 (work in progress), draft-ietf-httpbis-p5-range-latest (work in progress),
February 2014. April 2014.
[Part6] Fielding, R., Ed., Nottingham, M., Ed., and J. Reschke, [Part6] Fielding, R., Ed., Nottingham, M., Ed., and J. Reschke,
Ed., "Hypertext Transfer Protocol (HTTP/1.1): Caching", Ed., "Hypertext Transfer Protocol (HTTP/1.1): Caching",
draft-ietf-httpbis-p6-cache-26 (work in progress), draft-ietf-httpbis-p6-cache-latest (work in progress),
February 2014. April 2014.
[RFC2119] Bradner, S., "Key words for use in RFCs to Indicate [RFC2119] Bradner, S., "Key words for use in RFCs to Indicate
Requirement Levels", BCP 14, RFC 2119, March 1997. Requirement Levels", BCP 14, RFC 2119, March 1997.
[RFC5234] Crocker, D., Ed. and P. Overell, "Augmented BNF for Syntax [RFC5234] Crocker, D., Ed. and P. Overell, "Augmented BNF for Syntax
Specifications: ABNF", STD 68, RFC 5234, January 2008. Specifications: ABNF", STD 68, RFC 5234, January 2008.
10.2. Informative References 10.2. Informative References
[BCP90] Klyne, G., Nottingham, M., and J. Mogul, "Registration [BCP90] Klyne, G., Nottingham, M., and J. Mogul, "Registration
skipping to change at page 26, line 5 skipping to change at page 26, line 5
o <http://tools.ietf.org/wg/httpbis/trac/ticket/538>: "add o <http://tools.ietf.org/wg/httpbis/trac/ticket/538>: "add
'stateless' to Abstract" 'stateless' to Abstract"
o <http://tools.ietf.org/wg/httpbis/trac/ticket/542>: "improve o <http://tools.ietf.org/wg/httpbis/trac/ticket/542>: "improve
introduction of list rule" introduction of list rule"
o <http://tools.ietf.org/wg/httpbis/trac/ticket/549>: "augment o <http://tools.ietf.org/wg/httpbis/trac/ticket/549>: "augment
security considerations with pointers to current research" security considerations with pointers to current research"
D.3. Since draft-ietf-httpbis-p4-conditional-26
None yet.
Index Index
3 3
304 Not Modified (status code) 18 304 Not Modified (status code) 18
4 4
412 Precondition Failed (status code) 18 412 Precondition Failed (status code) 18
E E
ETag header field 9 ETag header field 9
 End of changes. 10 change blocks. 
12 lines changed or deleted 17 lines changed or added

This html diff was produced by rfcdiff 1.38. The latest version is available from http://tools.ietf.org/tools/rfcdiff/