draft-ietf-mmusic-rfc4566bis-19.txt   draft-ietf-mmusic-rfc4566bis-20.txt 
Network Working Group M. Handley Network Working Group M. Handley
Internet-Draft UCL Internet-Draft UCL
Obsoletes: 4566 (if approved) V. Jacobson Obsoletes: 4566 (if approved) V. Jacobson
Intended status: Standards Track Intended status: Standards Track
Expires: December 19, 2017 C. Perkins Expires: December 23, 2017 C. Perkins
University of Glasgow University of Glasgow
A. Begen A. Begen
Networked Media Networked Media
June 17, 2017 June 21, 2017
SDP: Session Description Protocol SDP: Session Description Protocol
draft-ietf-mmusic-rfc4566bis-19 draft-ietf-mmusic-rfc4566bis-20
Abstract Abstract
This memo defines the Session Description Protocol (SDP). SDP is This memo defines the Session Description Protocol (SDP). SDP is
intended for describing multimedia sessions for the purposes of intended for describing multimedia sessions for the purposes of
session announcement, session invitation, and other forms of session announcement, session invitation, and other forms of
multimedia session initiation. This document obsoletes RFC 4566. multimedia session initiation. This document obsoletes RFC 4566.
Status of This Memo Status of This Memo
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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 December 19, 2017. This Internet-Draft will expire on December 23, 2017.
Copyright Notice Copyright Notice
Copyright (c) 2017 IETF Trust and the persons identified as the Copyright (c) 2017 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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This section provides an Augmented BNF grammar for SDP. ABNF is This section provides an Augmented BNF grammar for SDP. ABNF is
defined in [RFC5234] and [RFC7405]. defined in [RFC5234] and [RFC7405].
; SDP Syntax ; SDP Syntax
session-description = proto-version session-description = proto-version
origin-field origin-field
session-name-field session-name-field
[information-field] [information-field]
[uri-field] [uri-field]
*email-fields *email-field
*phone-fields *phone-field
[connection-field] [connection-field]
*bandwidth-fields *bandwidth-field
1*time-fields 1*time-field
[key-field] [key-field]
*attribute-fields *attribute-field
*media-descriptions *media-description
proto-version = %s"v" "=" 1*DIGIT CRLF proto-version = %s"v" "=" 1*DIGIT CRLF
;this memo describes version 0 ;this memo describes version 0
origin-field = %s"o" "=" username SP sess-id SP sess-version SP origin-field = %s"o" "=" username SP sess-id SP sess-version SP
nettype SP addrtype SP unicast-address CRLF nettype SP addrtype SP unicast-address CRLF
session-name-field = %s"s" "=" text CRLF session-name-field = %s"s" "=" text CRLF
information-field = %s"i" "=" text CRLF information-field = %s"i" "=" text CRLF
uri-field = %s"u" "=" uri CRLF uri-field = %s"u" "=" uri CRLF
email-fields = %s"e" "=" email-address CRLF email-field = %s"e" "=" email-address CRLF
phone-fields = %s"p" "=" phone-number CRLF phone-field = %s"p" "=" phone-number CRLF
connection-field = %s"c" "=" nettype SP addrtype SP connection-field = %s"c" "=" nettype SP addrtype SP
connection-address CRLF connection-address CRLF
;a connection field must be present ;a connection field must be present
;in every media description or at the ;in every media description or at the
;session-level ;session-level
bandwidth-fields = %s"b" "=" bwtype ":" bandwidth CRLF bandwidth-field = %s"b" "=" bwtype ":" bandwidth CRLF
time-fields = %s"t" "=" start-time SP stop-time time-field = %s"t" "=" start-time SP stop-time
*(CRLF repeat-fields) CRLF *(CRLF repeat-fields) CRLF
[zone-adjustments CRLF] [zone-adjustments CRLF]
repeat-fields = %s"r" "=" repeat-interval SP typed-time repeat-fields = %s"r" "=" repeat-interval SP typed-time
1*(SP typed-time) 1*(SP typed-time)
zone-adjustments = %s"z" "=" time SP ["-"] typed-time zone-adjustments = %s"z" "=" time SP ["-"] typed-time
*(SP time SP ["-"] typed-time) *(SP time SP ["-"] typed-time)
key-field = %s"k" "=" key-type CRLF key-field = %s"k" "=" key-type CRLF
attribute-fields = %s"a" "=" attribute CRLF attribute-field = %s"a" "=" attribute CRLF
media-descriptions = media-field media-description = media-field
information-field [information-field]
*connection-field *connection-field
bandwidth-fields *bandwidth-fields
key-field [key-field]
attribute-fields *attribute-fields
media-field = %s"m" "=" media SP port ["/" integer] media-field = %s"m" "=" media SP port ["/" integer]
SP proto 1*(SP fmt) CRLF SP proto 1*(SP fmt) CRLF
; sub-rules of 'o=' ; sub-rules of 'o='
username = non-ws-string username = non-ws-string
;pretty wide definition, but doesn't ;pretty wide definition, but doesn't
;include space ;include space
sess-id = 1*DIGIT sess-id = 1*DIGIT
skipping to change at page 57, line 19 skipping to change at page 57, line 19
[RFC4566] Handley, M., Jacobson, V., and C. Perkins, "SDP: Session [RFC4566] Handley, M., Jacobson, V., and C. Perkins, "SDP: Session
Description Protocol", RFC 4566, DOI 10.17487/RFC4566, Description Protocol", RFC 4566, DOI 10.17487/RFC4566,
July 2006, <http://www.rfc-editor.org/info/rfc4566>. July 2006, <http://www.rfc-editor.org/info/rfc4566>.
[RFC4648] Josefsson, S., "The Base16, Base32, and Base64 Data [RFC4648] Josefsson, S., "The Base16, Base32, and Base64 Data
Encodings", RFC 4648, DOI 10.17487/RFC4648, October 2006, Encodings", RFC 4648, DOI 10.17487/RFC4648, October 2006,
<http://www.rfc-editor.org/info/rfc4648>. <http://www.rfc-editor.org/info/rfc4648>.
[RFC5226] Narten, T. and H. Alvestrand, "Guidelines for Writing an [RFC5226] Narten, T. and H. Alvestrand, "Guidelines for Writing an
IANA Considerations Section in RFCs", BCP 26, RFC 5226, IANA Considerations Section in RFCs", RFC 5226,
DOI 10.17487/RFC5226, May 2008, DOI 10.17487/RFC5226, May 2008,
<http://www.rfc-editor.org/info/rfc5226>. <http://www.rfc-editor.org/info/rfc5226>.
[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, Specifications: ABNF", STD 68, RFC 5234,
DOI 10.17487/RFC5234, January 2008, DOI 10.17487/RFC5234, January 2008,
<http://www.rfc-editor.org/info/rfc5234>. <http://www.rfc-editor.org/info/rfc5234>.
[RFC5576] Lennox, J., Ott, J., and T. Schierl, "Source-Specific [RFC5576] Lennox, J., Ott, J., and T. Schierl, "Source-Specific
Media Attributes in the Session Description Protocol Media Attributes in the Session Description Protocol
 End of changes. 14 change blocks. 
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