Network Working Group E. Wilde
Internet-Draft CA Technologies
Intended status: Standards Track September 23, 2016
Expires: March 27, 2017

A Media Type Structured Syntax Suffix for JSON Text Sequences


Structured Syntax Suffixes for media types allow other media types to build on them and make it explicit that they are built on an existing media type as their foundation. This specification defines and registers "json-seq" as a structured syntax suffix for JSON Text Sequences.

Note to Readers

This draft should be discussed on the art mailing list.

Online access to all versions and files is available on github.

Status of This Memo

This Internet-Draft is submitted in full conformance with the provisions of BCP 78 and BCP 79.

Internet-Drafts are working documents of the Internet Engineering Task Force (IETF). Note that other groups may also distribute working documents as Internet-Drafts. The list of current Internet-Drafts is at

Internet-Drafts are draft documents valid for a maximum of six months and may be updated, replaced, or obsoleted by other documents at any time. It is inappropriate to use Internet-Drafts as reference material or to cite them other than as "work in progress."

This Internet-Draft will expire on March 27, 2017.

Copyright Notice

Copyright (c) 2016 IETF Trust and the persons identified as the document authors. All rights reserved.

This document is subject to BCP 78 and the IETF Trust's Legal Provisions Relating to IETF Documents ( in effect on the date of publication of this document. Please review these documents carefully, as they describe your rights and restrictions with respect to this document. Code Components extracted from this document must include Simplified BSD License text as described in Section 4.e of the Trust Legal Provisions and are provided without warranty as described in the Simplified BSD License.

Table of Contents

1. Introduction

Media Type Structured Syntax Suffixes [2] were introduced as a way of how a media type can signal that it is based on another media type as its foundation. Some structured syntax suffixes were registered initially [5], including "+json" for the widely popular JSON Format [4] format.

JSON Text Sequences [3] is a new specification in the JSON space that defines how a sequence of multiple JSON texts can be represented in one representation. Since this specification can be used as the foundation for other formats, this specification defines and registers the "+json-seq" structured syntax suffix.

2. Terminology

The key words "MUST", "MUST NOT", "REQUIRED", "SHALL", "SHALL NOT", "SHOULD", "SHOULD NOT", "RECOMMENDED", "MAY", and "OPTIONAL" in this document are to be interpreted as described in RFC 2119 [1].

3. Using +json-seq

The use case for the "+json-seq" structured syntax suffix is the same as for "+json": It SHOULD be used by media types when parsing the JSON Text Sequence of a media type leads to a meaningful result, by simply using the generic JSON Text Sequence processing.

Applications encountering such a media type then can either simply use generic processing if all they need is a generic view of the JSON Text Sequence, or they can use generic JSON Text Sequence tools for initial parsing, and then can implement their own specific processing on top of that generic parsing tool.

4. IANA Considerations

IANA has added the following "+json-seq" structured syntax suffix to its registry of structured syntax suffixes established by [2]:

5. References

5.1. Normative References

[1] Bradner, S., "Key words for use in RFCs to Indicate Requirement Levels", RFC 2119, March 1997.
[2] Freed, N., Klensin, J. and T. Hansen, "Media Type Specifications and Registration Procedures", BCP 13, RFC 6838, DOI 10.17487/RFC6838, January 2013.
[3] Williams, N., "JavaScript Object Notation (JSON) Text Sequences", RFC 7464, DOI 10.17487/RFC7464, February 2015.

5.2. Non-Normative References

[4] Garcia-Martin, M. and S. Veikkolainen, "Session Description Protocol (SDP) Extension for Setting Audio and Video Media Streams over Circuit-Switched Bearers in the Public Switched Telephone Network (PSTN)", RFC 7195, DOI 10.17487/RFC7195, May 2014.
[5] Hansen, T. and A. Melnikov, "Additional Media Type Structured Syntax Suffixes", RFC 6839, DOI 10.17487/RFC6839, January 2013.

Author's Address

Erik Wilde CA Technologies EMail: URI: