draft-ietf-appsawg-media-type-suffix-regs-03.txt		draft-ietf-appsawg-media-type-suffix-regs-04.txt
	Network Working Group T. Hansen		Network Working Group T. Hansen
	Internet-Draft AT&T Laboratories		Internet-Draft AT&T Laboratories
	Updates: 3023 (if approved) A. Melnikov		Updates: 3023 (if approved) A. Melnikov
	Intended status: BCP Isode Ltd		Intended status: BCP Isode Ltd
	Expires: March 15, 2013 September 11, 2012		Expires: March 17, 2013 September 13, 2012
	Additional Media Type Structured Syntax Suffixes		Additional Media Type Structured Syntax Suffixes
	draft-ietf-appsawg-media-type-suffix-regs-03		draft-ietf-appsawg-media-type-suffix-regs-04
	Abstract		Abstract
	A content media type name sometimes includes partitioned meta-		A content media type name sometimes includes partitioned meta-
	information distinguish by a Structured Syntax, to permit noting an		information distinguish by a Structured Syntax, to permit noting an
	attribute of the media as a suffix to the name. This document		attribute of the media as a suffix to the name. This document
	defines several Structured Syntax Suffixes for use with media type		defines several Structured Syntax Suffixes for use with media type
	registrations. In particular, it defines and registers the "+json",		registrations. In particular, it defines and registers the "+json",
	"+ber", "+der", "+fastinfoset", "+wbxml" and "+zip" Structured Syntax		"+ber", "+der", "+fastinfoset", "+wbxml" and "+zip" Structured Syntax
	Suffixes, and updates the "+xml" Message Type Structured Syntax		Suffixes, and updates the "+xml" Message Type Structured Syntax
	skipping to change at page 1, line 38		skipping to change at page 1, line 38
	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 March 15, 2013.		This Internet-Draft will expire on March 17, 2013.
	Copyright Notice		Copyright Notice
	Copyright (c) 2012 IETF Trust and the persons identified as the		Copyright (c) 2012 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 2, line 24		skipping to change at page 2, line 24
	3.1. The +json Structured Syntax Suffix . . . . . . . . . . . . 4		3.1. The +json Structured Syntax Suffix . . . . . . . . . . . . 4
	3.2. The +ber Structured Syntax Suffixes . . . . . . . . . . . 5		3.2. The +ber Structured Syntax Suffixes . . . . . . . . . . . 5
	3.3. The +der Structured Syntax Suffixes . . . . . . . . . . . 6		3.3. The +der Structured Syntax Suffixes . . . . . . . . . . . 6
	3.4. The +fastinfoset Structured Syntax Suffix . . . . . . . . 8		3.4. The +fastinfoset Structured Syntax Suffix . . . . . . . . 8
	3.5. The +wbxml Structured Syntax Suffix . . . . . . . . . . . 9		3.5. The +wbxml Structured Syntax Suffix . . . . . . . . . . . 9
	3.6. The +zip Structured Syntax Suffix . . . . . . . . . . . . 10		3.6. The +zip Structured Syntax Suffix . . . . . . . . . . . . 10
	4. IANA Considerations . . . . . . . . . . . . . . . . . . . . . 11		4. IANA Considerations . . . . . . . . . . . . . . . . . . . . . 11
	5. Security Considerations . . . . . . . . . . . . . . . . . . . 12		5. Security Considerations . . . . . . . . . . . . . . . . . . . 12
	6. References . . . . . . . . . . . . . . . . . . . . . . . . . . 13		6. References . . . . . . . . . . . . . . . . . . . . . . . . . . 13
	6.1. Normative References . . . . . . . . . . . . . . . . . . . 13		6.1. Normative References . . . . . . . . . . . . . . . . . . . 13
	6.2. Informative References . . . . . . . . . . . . . . . . . . 13		6.2. Informative References . . . . . . . . . . . . . . . . . . 14
	Appendix A. Change History . . . . . . . . . . . . . . . . . . . 13		Appendix A. Change History . . . . . . . . . . . . . . . . . . . 14
	Authors' Addresses . . . . . . . . . . . . . . . . . . . . . . . . 14		Authors' Addresses . . . . . . . . . . . . . . . . . . . . . . . . 14
	1. Introduction		1. Introduction
	[RFC3023] created the +xml suffix convention that can be used when		[RFC3023] created the +xml suffix convention that can be used when
	defining names for media types whose representation uses XML		defining names for media types whose representation uses XML
	underneath. That is, they could have been successfully parsed as if		underneath. That is, they could have been successfully parsed as if
	the media type had been application/xml in addition to their being		the media type had been application/xml in addition to their being
	parsed as their media type that is using the +xml suffix.		parsed as their media type that is using the +xml suffix.
	[I-D.ietf-appsawg-media-type-regs] defines the Message Type		[I-D.ietf-appsawg-media-type-regs] defines the Message Type
	skipping to change at page 12, line 38		skipping to change at page 12, line 38
	For cases not defined in +xml, then as		For cases not defined in +xml, then as
	specified in "xxx/yyy+xml".		specified in "xxx/yyy+xml".
	5. Security Considerations		5. Security Considerations
	See the Security considerations sections found in the Message Type		See the Security considerations sections found in the Message Type
	Structured Syntax Suffix registration forms from Section 3.1 -		Structured Syntax Suffix registration forms from Section 3.1 -
	Section 3.5.		Section 3.5.
	When updating a +<suffix> registration care should be taken to review		When updating a +<suffix> registration, care should be taken to
	all previously registered xxx/yyy+<suffix> media types regarding		review all previously-registered xxx/yyy+<suffix> media types as to
	whether they might be affected by the updated +<suffix> registration,		whether they might be affected by the updated +<suffix> registration.
	in particular by introduction of new or changing generic fragment		Because the generic fragment identifier processing rules take
	identifier processing rules, as such rules take precedence over		precedence over media-type-specific rules, introducing new or
	media-type-specific rules and thus might break existing registrations		changing existing definitions may break the existing registrations of
	of specific media types, as well as particular implementations of		specific media types, as well as particular implementations of
	applications that process affected media types. Such changes can		applications that process affected media types. Such changes can
	introduce interoperability and security issues.		introduce interoperability and security issues.
			When updating the fragment identifier processing rules for a specific
			media type, care should be taken to review the generic fragment
			identifier processing rules for the +<suffix> registration and not
			introduce any conflicts. Because the generic fragment identifier
			processing rules take precedence over media-type-specific rules, such
			conflicting processing requirements should be ignored by an
			implementation, but such conflicts can introduce interoperability and
			security issues.
	6. References		6. References
	6.1. Normative References		6.1. Normative References
	[RFC4627] Crockford, D., "The application/json Media Type for		[RFC4627] Crockford, D., "The application/json Media Type for
	JavaScript Object Notation (JSON)", RFC 4627, July 2006.		JavaScript Object Notation (JSON)", RFC 4627, July 2006.
	[ITU.X690.2008]		[ITU.X690.2008]
	International Telecommunications Union, "Recommendation		International Telecommunications Union, "Recommendation
	ITU-T X.690 | ISO/IEC 8825-1 (2008), ASN.1 encoding rules:		ITU-T X.690 | ISO/IEC 8825-1 (2008), ASN.1 encoding rules:
	Specification of basic encoding Rules (BER), Canonical		Specification of basic encoding Rules (BER), Canonical
	encoding rules (CER) and Distinguished encoding rules		encoding rules (CER) and Distinguished encoding rules
	skipping to change at page 14, line 5		skipping to change at page 14, line 17
	[I-D.ietf-appsawg-media-type-regs]		[I-D.ietf-appsawg-media-type-regs]
	Freed, N., Klensin, J., and T. Hansen, "Media Type		Freed, N., Klensin, J., and T. Hansen, "Media Type
	Specifications and Registration Procedures",		Specifications and Registration Procedures",
	draft-ietf-appsawg-media-type-regs-14 (work in progress),		draft-ietf-appsawg-media-type-regs-14 (work in progress),
	June 2012.		June 2012.
	Appendix A. Change History		Appendix A. Change History
	This section is to be removed before publication.		This section is to be removed before publication.
			draft-ietf-appsawg-media-type-suffix-regs-03 Added generic fragment
			idenfier rules to +ber/+der to make them
			consistant with other registrations.
			Added some warning about how adding/changing
			fragment identifier rules for a +suffix can
			affect fragment identifier processing rules for
			previously registered xxx/yyy+suffix media types.
	draft-ietf-appsawg-media-type-suffix-regs-02 Added BER/DER security		draft-ietf-appsawg-media-type-suffix-regs-02 Added BER/DER security
	considerations.		considerations.
	Reworked fragment identifier wording some more.		Reworked fragment identifier wording some more.
	draft-ietf-appsawg-media-type-suffix-regs-01 Reordered the sections.		draft-ietf-appsawg-media-type-suffix-regs-01 Reordered the sections.
	Cleaned up some MUSTard.		Cleaned up some MUSTard.
	Fixed some references.		Fixed some references.
	Added encoding considerations.		Added encoding considerations.
	Reworked fragment identifier wording.		Reworked fragment identifier wording.
End of changes. 8 change blocks.
	12 lines changed or deleted		30 lines changed or added
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