[MMUSIC] BUNDLE (pre-5): New Answerer text
Christer Holmberg <christer.holmberg@ericsson.com> Thu, 19 September 2013 10:23 UTC
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From: Christer Holmberg <christer.holmberg@ericsson.com>
To: "mmusic@ietf.org" <mmusic@ietf.org>
Thread-Topic: BUNDLE (pre-5): New Answerer text
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Date: Thu, 19 Sep 2013 10:23:07 +0000
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Subject: [MMUSIC] BUNDLE (pre-5): New Answerer text
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Hi, Based on the new BUNDLE Offerer text, I also modified (and, hopefully clarified) the Answerer text. In addition, the new text also covers 'bundle-only' m- lines. Comments are welcome. Regards, Christer --------------------- 6.5. SDP Answerer Procedures 6.5.1. Answerer Bundle Address Selection and Usage 6.5.1.1. Offerer Bundle Address Selection When an Answerer generates an Answer that contains a BUNDLE group, the Answer MUST select the Offerer's BUNDLE address. The first mid value in the SDP group:BUNDLE attribute mid list of the Offer represents the address which the Offerer wishes the Answer to select as the Offerer's BUNDLE address [ref-to-offer-prec]. The Answerer SHOULD select the address represented by the first mid value, unless the Answerer in the associated Answer will rejects the "m=" line associated with the mid value [ref], or remove the "m=" line from the BUNDLE group [ref] from the BUNDLE group. In such case the Answerer MUST select an address associated with the next mid value in the SDP group:BUNDLE attribute mid list of the Offer. In the SDP Answer, the Answerer MUST place the mid value associated with the selected Offerer's BUNDLE address first in the SDP group:BUNDLE attribute mid list associated with the BUNDLE group. Section 10.1 shows an example of an Offerer's BUNDLE address selection. 6.5.1.2. Anwerer Bundle Address Selection When an Answerer creates an Answer that contains a BUNDLE group, the Answerer MUST assign a local shared address, the Answerer's BUNDLE address, to each "m=" line within the BUNDLE group. The Answerer is allowed to change its BUNDLE address in any SDP Answer. The Answerer MUST NOT assign a shared address, that it has assigned to an "m=" line within a BUNDLE group, to an "m=" line outside the BUNDLE group. Section 10.1 shows an example of an Answerer's local BUNDLE address selection. 6.5.2. Moving A Media Description Out Of A BUNDLE Group When an Answerer generates an Answer, in which an "m=" line is moved out of a BUNDLE group, the Answerer assigns an address to the moved "m=" line based on the type of address that the Offerer assigned to the associated "m=" line in the associated Offer, as described below. If the Offerer assigned a shared address to the "m=" line, the answerer MUST reject the moved "m=" line, according to the procedures in Section 6.5.3. If the Offerer assigned a 'bundle-only' attribute to the "m=" line, the Answerer MUST reject the moved "m=" line, according to the procedures in Section 6.5.3. If the Offerer assigned a unique address to the "m=" line, the Answer MUST assign a unique address to the moved "m=" line. In addition, in either case above, the Answerer MUST NOT anymore include a mid value, representing the "m=" line, in the SDP group:BUNDLE attribute list associated with the BUNDLE group. 6.5.3. Rejecting A Media Description In A BUNDLE Group When an Answerer generates an Answer, in which an "m=" line associated with a BUNDLE group is rejected, the Answerer MUST assign an address with a zero port value to the rejected "m=" line, according to the procedures in [RFC3264]. In addition, the Answerer MUST NOT anymore include a mid value, representing the "m=" line, in the SDP group:BUNDLE attribute midlist associated with the BUNDLE group.
- [MMUSIC] BUNDLE (pre-5): New Answerer text Christer Holmberg
- Re: [MMUSIC] BUNDLE (pre-5): New Answerer text Harald Alvestrand
- Re: [MMUSIC] BUNDLE (pre-5): New Answerer text Christer Holmberg