draft-ietf-mmusic-sdp-srcfilter-08.txt   draft-ietf-mmusic-sdp-srcfilter-09.txt 
Network Working Group Bob Quinn Network Working Group Bob Quinn
INTERNET-DRAFT Celox Networks INTERNET-DRAFT Celox Networks
Category: Standards Track Ross Finlayson Category: Standards Track Ross Finlayson
Expires: December 2005 LIVE.COM Expires: December 2005 LIVE.COM
June 14, 2005 June 16, 2005
Session Description Protocol (SDP) Source Filters Session Description Protocol (SDP) Source Filters
<draft-ietf-mmusic-sdp-srcfilter-08.txt> <draft-ietf-mmusic-sdp-srcfilter-09.txt>
Status of this Memo Status of this Memo
By submitting this Internet-Draft, each author represents that By submitting this Internet-Draft, each author represents that
any applicable patent or other IPR claims of which he or she is any applicable patent or other IPR claims of which he or she is
aware have been or will be disclosed, and any of which he or she aware have been or will be disclosed, and any of which he or she
becomes aware will be disclosed, in accordance with Section 6 of becomes aware will be disclosed, in accordance with Section 6 of
BCP 79. BCP 79.
Internet-Drafts are working documents of the Internet Engineering Internet-Drafts are working documents of the Internet Engineering
skipping to change at line 199 skipping to change at line 199
"media-level"). A media-level source-filter will always completely "media-level"). A media-level source-filter will always completely
override a session-level source-filter. override a session-level source-filter.
A "source-filter" need not be located at the same hierarchy level as A "source-filter" need not be located at the same hierarchy level as
its corresponding <connection-field>. So, a media-level <source- its corresponding <connection-field>. So, a media-level <source-
filter> can reference a session-level <connection-field> value, and a filter> can reference a session-level <connection-field> value, and a
session-level "source-filter" can be applied to all matching media- session-level "source-filter" can be applied to all matching media-
level <connection-field> values. See section 3.2.3 for an example. level <connection-field> values. See section 3.2.3 for an example.
An SDP description MUST NOT contain more than one session-level An SDP description MUST NOT contain more than one session-level
"source-filter" attribute, nor more than one media-level "source-filter" attribute that covers the same destination address,
"source-filter" attribute for the same medium. nor more than one media-level "source-filter" attribute that covers
the same destination address.
There is no specified limit to the number of entries allowed in the There is no specified limit to the number of entries allowed in the
<src-list>, however there are practical limits that should be <src-list>, however there are practical limits that should be
considered. For example, depending on the transport to be used for considered. For example, depending on the transport to be used for
the session description, there may be a limit to the total size of the session description, there may be a limit to the total size of
the session description (e.g., as determined by the maximum payload the session description (e.g., as determined by the maximum payload
in a single datagram). Also, when the source-filter is applied to in a single datagram). Also, when the source-filter is applied to
control protocols, there may be a limit to the number of source control protocols, there may be a limit to the number of source
addresses that can be sent. These limits are outside the scope of addresses that can be sent. These limits are outside the scope of
this document, but should be considered when defining source-filter this document, but should be considered when defining source-filter
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; "*" applies to all connection-address values. ; "*" applies to all connection-address values.
; IP4-address, IP6-address, FQDN are as defined ; IP4-address, IP6-address, FQDN are as defined
; in [SDP]. ; in [SDP].
src-list = *(addr SP) unicast-address src-list = *(addr SP) unicast-address
; one or more unicast source addresses (in ; one or more unicast source addresses (in
; standard IPv4 or IPv6 ASCII-notation form) ; standard IPv4 or IPv6 ASCII-notation form)
; or FQDNs. ; or FQDNs.
; unicast-address is as defined in [SDP]. ; unicast-address is as defined in [SDP].
Expires: December 2005 June 14, 2005 Expires: December 2005 June 16, 2005
 End of changes. 

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