draft-ietf-httpbis-p2-semantics-11.txt   draft-ietf-httpbis-p2-semantics-latest.txt 
HTTPbis Working Group R. Fielding, Ed. HTTPbis Working Group R. Fielding, Ed.
Internet-Draft Day Software Internet-Draft Day Software
Obsoletes: 2616 (if approved) J. Gettys Obsoletes: 2616 (if approved) J. Gettys
Updates: 2817 (if approved) Alcatel-Lucent Updates: 2817 (if approved) Alcatel-Lucent
Intended status: Standards Track J. Mogul Intended status: Standards Track J. Mogul
Expires: February 5, 2011 HP Expires: March 6, 2011 HP
H. Frystyk H. Frystyk
Microsoft Microsoft
L. Masinter L. Masinter
Adobe Systems Adobe Systems
P. Leach P. Leach
Microsoft Microsoft
T. Berners-Lee T. Berners-Lee
W3C/MIT W3C/MIT
Y. Lafon, Ed. Y. Lafon, Ed.
W3C W3C
J. Reschke, Ed. J. Reschke, Ed.
greenbytes greenbytes
August 4, 2010 September 2, 2010
HTTP/1.1, part 2: Message Semantics HTTP/1.1, part 2: Message Semantics
draft-ietf-httpbis-p2-semantics-11 draft-ietf-httpbis-p2-semantics-latest
Abstract Abstract
The Hypertext Transfer Protocol (HTTP) is an application-level The Hypertext Transfer Protocol (HTTP) is an application-level
protocol for distributed, collaborative, hypermedia information protocol for distributed, collaborative, hypermedia information
systems. HTTP has been in use by the World Wide Web global systems. HTTP has been in use by the World Wide Web global
information initiative since 1990. This document is Part 2 of the information initiative since 1990. This document is Part 2 of the
seven-part specification that defines the protocol referred to as seven-part specification that defines the protocol referred to as
"HTTP/1.1" and, taken together, obsoletes RFC 2616. Part 2 defines "HTTP/1.1" and, taken together, obsoletes RFC 2616. Part 2 defines
the semantics of HTTP messages as expressed by request methods, the semantics of HTTP messages as expressed by request methods,
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fields. fields.
Editorial Note (To be removed by RFC Editor) Editorial Note (To be removed by RFC Editor)
Discussion of this draft should take place on the HTTPBIS working Discussion of this draft should take place on the HTTPBIS working
group mailing list (ietf-http-wg@w3.org). The current issues list is group mailing list (ietf-http-wg@w3.org). The current issues list is
at <http://tools.ietf.org/wg/httpbis/trac/report/3> and related at <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 C.12. The changes in this draft are summarized in Appendix C.13.
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 February 5, 2011. This Internet-Draft will expire on March 6, 2011.
Copyright Notice Copyright Notice
Copyright (c) 2010 IETF Trust and the persons identified as the Copyright (c) 2010 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
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13. References . . . . . . . . . . . . . . . . . . . . . . . . . . 42 13. References . . . . . . . . . . . . . . . . . . . . . . . . . . 42
13.1. Normative References . . . . . . . . . . . . . . . . . . . 42 13.1. Normative References . . . . . . . . . . . . . . . . . . . 42
13.2. Informative References . . . . . . . . . . . . . . . . . . 43 13.2. Informative References . . . . . . . . . . . . . . . . . . 43
Appendix A. Changes from RFC 2616 . . . . . . . . . . . . . . . . 43 Appendix A. Changes from RFC 2616 . . . . . . . . . . . . . . . . 43
Appendix B. Collected ABNF . . . . . . . . . . . . . . . . . . . 44 Appendix B. Collected ABNF . . . . . . . . . . . . . . . . . . . 44
Appendix C. Change Log (to be removed by RFC Editor before Appendix C. Change Log (to be removed by RFC Editor before
publication) . . . . . . . . . . . . . . . . . . . . 47 publication) . . . . . . . . . . . . . . . . . . . . 47
C.1. Since RFC2616 . . . . . . . . . . . . . . . . . . . . . . 47 C.1. Since RFC2616 . . . . . . . . . . . . . . . . . . . . . . 47
C.2. Since draft-ietf-httpbis-p2-semantics-00 . . . . . . . . . 47 C.2. Since draft-ietf-httpbis-p2-semantics-00 . . . . . . . . . 47
C.3. Since draft-ietf-httpbis-p2-semantics-01 . . . . . . . . . 47 C.3. Since draft-ietf-httpbis-p2-semantics-01 . . . . . . . . . 48
C.4. Since draft-ietf-httpbis-p2-semantics-02 . . . . . . . . . 48 C.4. Since draft-ietf-httpbis-p2-semantics-02 . . . . . . . . . 48
C.5. Since draft-ietf-httpbis-p2-semantics-03 . . . . . . . . . 49 C.5. Since draft-ietf-httpbis-p2-semantics-03 . . . . . . . . . 49
C.6. Since draft-ietf-httpbis-p2-semantics-04 . . . . . . . . . 49 C.6. Since draft-ietf-httpbis-p2-semantics-04 . . . . . . . . . 49
C.7. Since draft-ietf-httpbis-p2-semantics-05 . . . . . . . . . 49 C.7. Since draft-ietf-httpbis-p2-semantics-05 . . . . . . . . . 50
C.8. Since draft-ietf-httpbis-p2-semantics-06 . . . . . . . . . 50 C.8. Since draft-ietf-httpbis-p2-semantics-06 . . . . . . . . . 50
C.9. Since draft-ietf-httpbis-p2-semantics-07 . . . . . . . . . 50 C.9. Since draft-ietf-httpbis-p2-semantics-07 . . . . . . . . . 50
C.10. Since draft-ietf-httpbis-p2-semantics-08 . . . . . . . . . 51 C.10. Since draft-ietf-httpbis-p2-semantics-08 . . . . . . . . . 51
C.11. Since draft-ietf-httpbis-p2-semantics-09 . . . . . . . . . 51 C.11. Since draft-ietf-httpbis-p2-semantics-09 . . . . . . . . . 51
C.12. Since draft-ietf-httpbis-p2-semantics-10 . . . . . . . . . 51 C.12. Since draft-ietf-httpbis-p2-semantics-10 . . . . . . . . . 51
C.13. Since draft-ietf-httpbis-p2-semantics-11 . . . . . . . . . 52
Index . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 52 Index . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 52
1. Introduction 1. Introduction
This document defines HTTP/1.1 request and response semantics. Each This document defines HTTP/1.1 request and response semantics. Each
HTTP message, as defined in [Part1], is in the form of either a HTTP message, as defined in [Part1], is in the form of either a
request or a response. An HTTP server listens on a connection for request or a response. An HTTP server listens on a connection for
HTTP requests and responds to each request, in the order received on HTTP requests and responds to each request, in the order received on
that connection, with one or more HTTP response messages. This that connection, with one or more HTTP response messages. This
document defines the commonly agreed upon semantics of the HTTP document defines the commonly agreed upon semantics of the HTTP
uniform interface, the intentions defined by each request method, and uniform interface, the intentions defined by each request method, and
the various response messages that might be expected as a result of the various response messages that might be expected as a result of
applying that method to the target resource. applying that method to the target resource.
This document is currently disorganized in order to minimize the This document is currently disorganized in order to minimize the
changes between drafts and enable reviewers to see the smaller errata changes between drafts and enable reviewers to see the smaller errata
changes. The next draft will reorganize the sections to better changes. A future draft will reorganize the sections to better
reflect the content. In particular, the sections will be ordered reflect the content. In particular, the sections will be ordered
according to the typical processing of an HTTP request message (after according to the typical processing of an HTTP request message (after
message parsing): resource mapping, general header fields, methods, message parsing): resource mapping, general header fields, methods,
request modifiers, response status, and resource metadata. The request modifiers, response status, and resource metadata. The
current mess reflects how widely dispersed these topics and current mess reflects how widely dispersed these topics and
associated requirements had become in [RFC2616]. associated requirements had become in [RFC2616].
1.1. Requirements 1.1. Requirements
The key words "MUST", "MUST NOT", "REQUIRED", "SHALL", "SHALL NOT", The key words "MUST", "MUST NOT", "REQUIRED", "SHALL", "SHALL NOT",
skipping to change at page 42, line 22 skipping to change at page 42, line 22
12. Acknowledgments 12. Acknowledgments
13. References 13. References
13.1. Normative References 13.1. Normative References
[Part1] Fielding, R., Ed., Gettys, J., Mogul, J., Frystyk, H., [Part1] Fielding, R., Ed., Gettys, J., Mogul, J., Frystyk, H.,
Masinter, L., Leach, P., Berners-Lee, T., Lafon, Y., Ed., Masinter, L., Leach, P., Berners-Lee, T., Lafon, Y., Ed.,
and J. Reschke, Ed., "HTTP/1.1, part 1: URIs, Connections, and J. Reschke, Ed., "HTTP/1.1, part 1: URIs, Connections,
and Message Parsing", draft-ietf-httpbis-p1-messaging-11 and Message Parsing",
(work in progress), August 2010. draft-ietf-httpbis-p1-messaging-latest (work in progress),
September 2010.
[Part3] Fielding, R., Ed., Gettys, J., Mogul, J., Frystyk, H., [Part3] Fielding, R., Ed., Gettys, J., Mogul, J., Frystyk, H.,
Masinter, L., Leach, P., Berners-Lee, T., Lafon, Y., Ed., Masinter, L., Leach, P., Berners-Lee, T., Lafon, Y., Ed.,
and J. Reschke, Ed., "HTTP/1.1, part 3: Message Payload and J. Reschke, Ed., "HTTP/1.1, part 3: Message Payload
and Content Negotiation", draft-ietf-httpbis-p3-payload-11 and Content Negotiation",
(work in progress), August 2010. draft-ietf-httpbis-p3-payload-latest (work in progress),
September 2010.
[Part4] Fielding, R., Ed., Gettys, J., Mogul, J., Frystyk, H., [Part4] Fielding, R., Ed., Gettys, J., Mogul, J., Frystyk, H.,
Masinter, L., Leach, P., Berners-Lee, T., Lafon, Y., Ed., Masinter, L., Leach, P., Berners-Lee, T., Lafon, Y., Ed.,
and J. Reschke, Ed., "HTTP/1.1, part 4: Conditional and J. Reschke, Ed., "HTTP/1.1, part 4: Conditional
Requests", draft-ietf-httpbis-p4-conditional-11 (work in Requests", draft-ietf-httpbis-p4-conditional-latest (work
progress), August 2010. in progress), September 2010.
[Part5] Fielding, R., Ed., Gettys, J., Mogul, J., Frystyk, H., [Part5] Fielding, R., Ed., Gettys, J., Mogul, J., Frystyk, H.,
Masinter, L., Leach, P., Berners-Lee, T., Lafon, Y., Ed., Masinter, L., Leach, P., Berners-Lee, T., Lafon, Y., Ed.,
and J. Reschke, Ed., "HTTP/1.1, part 5: Range Requests and and J. Reschke, Ed., "HTTP/1.1, part 5: Range Requests and
Partial Responses", draft-ietf-httpbis-p5-range-11 (work Partial Responses", draft-ietf-httpbis-p5-range-latest
in progress), August 2010. (work in progress), September 2010.
[Part6] Fielding, R., Ed., Gettys, J., Mogul, J., Frystyk, H., [Part6] Fielding, R., Ed., Gettys, J., Mogul, J., Frystyk, H.,
Masinter, L., Leach, P., Berners-Lee, T., Lafon, Y., Ed., Masinter, L., Leach, P., Berners-Lee, T., Lafon, Y., Ed.,
Nottingham, M., Ed., and J. Reschke, Ed., "HTTP/1.1, part Nottingham, M., Ed., and J. Reschke, Ed., "HTTP/1.1, part
6: Caching", draft-ietf-httpbis-p6-cache-11 (work in 6: Caching", draft-ietf-httpbis-p6-cache-latest (work in
progress), August 2010. progress), September 2010.
[Part7] Fielding, R., Ed., Gettys, J., Mogul, J., Frystyk, H., [Part7] Fielding, R., Ed., Gettys, J., Mogul, J., Frystyk, H.,
Masinter, L., Leach, P., Berners-Lee, T., Lafon, Y., Ed., Masinter, L., Leach, P., Berners-Lee, T., Lafon, Y., Ed.,
and J. Reschke, Ed., "HTTP/1.1, part 7: Authentication", and J. Reschke, Ed., "HTTP/1.1, part 7: Authentication",
draft-ietf-httpbis-p7-auth-11 (work in progress), draft-ietf-httpbis-p7-auth-latest (work in progress),
August 2010. September 2010.
[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.
[RFC3986] Berners-Lee, T., Fielding, R., and L. Masinter, "Uniform [RFC3986] Berners-Lee, T., Fielding, R., and L. Masinter, "Uniform
Resource Identifier (URI): Generic Syntax", RFC 3986, Resource Identifier (URI): Generic Syntax", RFC 3986,
STD 66, January 2005. STD 66, January 2005.
[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.
skipping to change at page 52, line 11 skipping to change at page 52, line 17
o <http://tools.ietf.org/wg/httpbis/trac/ticket/190>: "OPTIONS vs o <http://tools.ietf.org/wg/httpbis/trac/ticket/190>: "OPTIONS vs
Max-Forwards" Max-Forwards"
o <http://tools.ietf.org/wg/httpbis/trac/ticket/199>: "Status codes o <http://tools.ietf.org/wg/httpbis/trac/ticket/199>: "Status codes
and caching" and caching"
o <http://tools.ietf.org/wg/httpbis/trac/ticket/220>: "consider o <http://tools.ietf.org/wg/httpbis/trac/ticket/220>: "consider
removing the 'changes from 2068' sections" removing the 'changes from 2068' sections"
C.13. Since draft-ietf-httpbis-p2-semantics-11
None yet.
Index Index
1 1
100 Continue (status code) 20 100 Continue (status code) 20
101 Switching Protocols (status code) 21 101 Switching Protocols (status code) 21
2 2
200 OK (status code) 21 200 OK (status code) 21
201 Created (status code) 21 201 Created (status code) 21
202 Accepted (status code) 22 202 Accepted (status code) 22
 End of changes. 16 change blocks. 
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