draft-ietf-httpbis-p6-cache-11.txt		draft-ietf-httpbis-p6-cache-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
	Intended status: Standards Track Alcatel-Lucent		Intended status: Standards Track Alcatel-Lucent
	Expires: February 5, 2011 J. Mogul		Expires: March 6, 2011 J. Mogul
	HP		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
	M. Nottingham, Ed.		M. Nottingham, Ed.
	J. Reschke, Ed.		J. Reschke, Ed.
	greenbytes		greenbytes
	August 4, 2010		September 2, 2010
	HTTP/1.1, part 6: Caching		HTTP/1.1, part 6: Caching
	draft-ietf-httpbis-p6-cache-11		draft-ietf-httpbis-p6-cache-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. This document is Part 6 of the seven-part specification		systems. This document is Part 6 of the seven-part specification
	that defines the protocol referred to as "HTTP/1.1" and, taken		that defines the protocol referred to as "HTTP/1.1" and, taken
	together, obsoletes RFC 2616. Part 6 defines requirements on HTTP		together, obsoletes RFC 2616. Part 6 defines requirements on HTTP
	caches and the associated header fields that control cache behavior		caches and the associated header fields that control cache behavior
	or indicate cacheable response messages.		or indicate cacheable response messages.
	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
	skipping to change at page 4, line 8		skipping to change at page 4, line 8
	C.3. Since draft-ietf-httpbis-p6-cache-01 . . . . . . . . . . . 34		C.3. Since draft-ietf-httpbis-p6-cache-01 . . . . . . . . . . . 34
	C.4. Since draft-ietf-httpbis-p6-cache-02 . . . . . . . . . . . 34		C.4. Since draft-ietf-httpbis-p6-cache-02 . . . . . . . . . . . 34
	C.5. Since draft-ietf-httpbis-p6-cache-03 . . . . . . . . . . . 34		C.5. Since draft-ietf-httpbis-p6-cache-03 . . . . . . . . . . . 34
	C.6. Since draft-ietf-httpbis-p6-cache-04 . . . . . . . . . . . 34		C.6. Since draft-ietf-httpbis-p6-cache-04 . . . . . . . . . . . 34
	C.7. Since draft-ietf-httpbis-p6-cache-05 . . . . . . . . . . . 35		C.7. Since draft-ietf-httpbis-p6-cache-05 . . . . . . . . . . . 35
	C.8. Since draft-ietf-httpbis-p6-cache-06 . . . . . . . . . . . 35		C.8. Since draft-ietf-httpbis-p6-cache-06 . . . . . . . . . . . 35
	C.9. Since draft-ietf-httpbis-p6-cache-07 . . . . . . . . . . . 35		C.9. Since draft-ietf-httpbis-p6-cache-07 . . . . . . . . . . . 35
	C.10. Since draft-ietf-httpbis-p6-cache-08 . . . . . . . . . . . 36		C.10. Since draft-ietf-httpbis-p6-cache-08 . . . . . . . . . . . 36
	C.11. Since draft-ietf-httpbis-p6-cache-09 . . . . . . . . . . . 36		C.11. Since draft-ietf-httpbis-p6-cache-09 . . . . . . . . . . . 36
	C.12. Since draft-ietf-httpbis-p6-cache-10 . . . . . . . . . . . 37		C.12. Since draft-ietf-httpbis-p6-cache-10 . . . . . . . . . . . 37
			C.13. Since draft-ietf-httpbis-p6-cache-11 . . . . . . . . . . . 37
	Index . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37		Index . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37
	1. Introduction		1. Introduction
	HTTP is typically used for distributed information systems, where		HTTP is typically used for distributed information systems, where
	performance can be improved by the use of response caches. This		performance can be improved by the use of response caches. This
	document defines aspects of HTTP/1.1 related to caching and reusing		document defines aspects of HTTP/1.1 related to caching and reusing
	response messages.		response messages.
	1.1. Purpose		1.1. Purpose
	skipping to change at page 30, line 21		skipping to change at page 30, line 21
	suggestions and comments from individuals including: Shel Kaphan,		suggestions and comments from individuals including: Shel Kaphan,
	Paul Leach, Koen Holtman, David Morris, and Larry Masinter.		Paul Leach, Koen Holtman, David Morris, and Larry Masinter.
	8. References		8. References
	8.1. Normative References		8.1. 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.
	[Part2] Fielding, R., Ed., Gettys, J., Mogul, J., Frystyk, H.,		[Part2] 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 2: Message		and J. Reschke, Ed., "HTTP/1.1, part 2: Message
	Semantics", draft-ietf-httpbis-p2-semantics-11 (work in		Semantics", draft-ietf-httpbis-p2-semantics-latest (work
	progress), August 2010.		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.
	[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.
	[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.
	8.2. Informative References		8.2. Informative References
	[RFC1305] Mills, D., "Network Time Protocol (Version 3)		[RFC1305] Mills, D., "Network Time Protocol (Version 3)
	skipping to change at page 37, line 28		skipping to change at page 37, line 28
	removing the 'changes from 2068' sections"		removing the 'changes from 2068' sections"
	o <http://tools.ietf.org/wg/httpbis/trac/ticket/223>: "Allowing		o <http://tools.ietf.org/wg/httpbis/trac/ticket/223>: "Allowing
	heuristic caching for new status codes"		heuristic caching for new status codes"
	o <http://tools.ietf.org/wg/httpbis/trac/ticket/223>: "Allowing		o <http://tools.ietf.org/wg/httpbis/trac/ticket/223>: "Allowing
	heuristic caching for new status codes"		heuristic caching for new status codes"
	o Clean up TODOs and prose in "Combining Responses."		o Clean up TODOs and prose in "Combining Responses."
			C.13. Since draft-ietf-httpbis-p6-cache-11
			None yet.
	Index		Index
	A		A
	age 6		age 6
	Age header 17		Age header 17
	C		C
	cache 5		cache 5
	Cache Directives		Cache Directives
	max-age 19, 22		max-age 19, 22
End of changes. 12 change blocks.
	15 lines changed or deleted		21 lines changed or added
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