[MMUSIC] draft-ietf-mmusic-sdp-new-15.txt
Colin Perkins <csp@csperkins.org> Mon, 27 October 2003 12:28 UTC
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Date: Mon, 27 Oct 2003 12:27:23 +0000
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From: Colin Perkins <csp@csperkins.org>
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Subject: [MMUSIC] draft-ietf-mmusic-sdp-new-15.txt
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I've just submitted draft-ietf-mmusic-sdp-new-15.txt to address IESG concerns and other comments raised on the mailing list. Changes since -14 include: - Update references: RFC 1889 -> RFC 3550 RFC 1890 -> RFC 3551 draft-ietf-mmusic-sdp4nat-05.txt -> RFC 3605 - Clarify that b= may be duplicated - Clarify that multiple addresses or "c=" lines can only be specified if they provide multicast addresses for different layers - Clarify use of b= with layered coding: When using the CT modifier with RTP, if several RTP sessions are part of the conference, the conference total refers to total bandwidth of all RTP sessions. - Clarify which ports are associated with an m= line when layered coding is used - Remove extra ")" from the definition of m1 in the ABNF - Add reference to RFC2396 in definition of u= - Add MIME registration to the IANA Considerations section, and note that this draft updates RFC 2327 - In the description of "k=", note that S/MIME email and TLS protected HTTP and SIP might be appropriate secure transports for SDP. Also note that it is necessary to "ensure that the secure channel is with the party that is authorized to join the session, not an intermediary" and "If a caching server is used, there ought to be a way to keep the server from accessing the key" - The recommendation that systems "SHOULD NOT deliver the user into an interactive multimedia session without the user being aware that this will happen" in the Security Considerations section was strengthened to "MUST NOT deliver the user into an interactive multimedia session unless the user has explicitly pre-authorized such action" - A comment in the ABNF for "token-char" allowed a larger set of characters than the actual definition. The comment has been removed, leaving the set of allowed characters as specified in the ABNF - Clarify that UTF-8 normalization is not needed because comparisons are not done on fields with UTF-8. - Clarify that k= is NOT RECOMMENDED and give pointers to the sdescriptions and key-mgmt drafts. - Clarify that k= does not include an algorithm identifier, key type, or any other information about the key. - Clarify that k= does not support the transfer of two keys - Remove reference to RFC 3551/1890 from the description of k=, since that nowhere specified how k= was used. - Note that a session description may contain URIs which may be dereferenced. This makes the SDP non-self contained. - Remove "Changes from RFC 2327" section, since it was very inaccurate and outdated. Feedback on these changes would be appreciated. -- Colin Perkins http://csperkins.org/
- [MMUSIC] draft-ietf-mmusic-sdp-new-15.txt Colin Perkins