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Indicating Media Features for MIME Content (RFC2912)

IP.com Disclosure Number: IPCOM000005094D
Original Publication Date: 2000-Sep-01
Included in the Prior Art Database: 2001-Aug-15
Document File: 12 page(s) / 21K

Publishing Venue

Internet Society Requests For Comment (RFCs)

Related People

G. Klyne: AUTHOR

Abstract

In "A Syntax for Describing Media Feature Sets", an expression format is presented for describing media feature capabilities using simple media feature tags.

This text was extracted from a ASCII Text document.
This is the abbreviated version, containing approximately 17% of the total text.

Network Working Group G. Klyne Request for Comments: 2912 Content Technologies Category: Standards Track September 2000

Indicating Media Features for MIME Content

Status of this Memo

This document specifies an Internet standards track protocol for the Internet community, and requests discussion and suggestions for improvements. Please refer to the current edition of the "Internet Official Protocol Standards" (STD 1) for the standardization state and status of this protocol. Distribution of this memo is unlimited.

Copyright Notice

Copyright (C) The Internet Society (2000). All Rights Reserved.

Abstract

In "A Syntax for Describing Media Feature Sets", an expression format is presented for describing media feature capabilities using simple media feature tags.

This memo defines a Multipurpose Internet Mail Extensions (MIME) 'Content-features:' header that can be used to annotate a MIME message part using this expression format, and indicates some ways it might be used.

Klyne Standards Track [Page 1]

RFC 2912 Indicating Media Features for MIME Content September 2000

Table of Contents

1. Introduction ............................................... 2

1.1 Terminology and document conventions ................... 2 2. Motivation and goals ....................................... 3 3. The 'Content-features:' MIME header ........................ 4 3.1 Whitespace and folding long headers .................... 4 3.2 Usage considerations ................................... 4 3.2.1 Simple message parts ............................... 4 3.2.2 Multipart and other composites ..................... 5

3.2.3 Reference to external data ......................... 5 4. Examples ................................................... 5 4.1 Simple message ......................................... 5 4.2 Fax message ............................................ 6 4.3 Multipart/alternative data ............................. 6 4.4 Reference to external message data ..................... 8 4.5 Compressed data ........................................ 8

4.6 Multipart/related data ................................. 8 5. Security Considerations .................................... 9 6. Acknowledgements ........................................... 10 7. References ................................................. 10 8. Author's Address ........................................... 10 Full Copyright Statement ...................................... 11

1. Introduction

In "A Syntax for Describing Media Feature Sets" [1], an expression format is presented for describing media feature capabilities as a combination of simple media feature tags, registered according to "Media Feature Tag Registration Procedure" [2]. This provides a format for message handling agents to describe the media feature content of messages that they can handle.

This memo defines a MIME 'Content-features:' header that can be used to annotate a MIME message part using these feature expressions. This header provides a means to indicate media-relate...