Re: [MMUSIC] BUNDLE: Accept m- line, reject bundle
Paul Kyzivat <pkyzivat@alum.mit.edu> Fri, 03 May 2013 15:43 UTC
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Date: Fri, 03 May 2013 11:01:21 -0400
From: Paul Kyzivat <pkyzivat@alum.mit.edu>
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Subject: Re: [MMUSIC] BUNDLE: Accept m- line, reject bundle
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On 5/3/13 9:07 AM, Christer Holmberg wrote: > Hi, > > Assume the following case: > > 1.An SDP offer contains an m- line associated with a BUNDLE group > > 2.The answerer wants to accept the m- line, but wants to reject it being > in the specific BUNDLE group. > > A few alternatives on how this could be achieved have been presented: > > Alt 1. The answerer accepts the m- line, but does not associate it > with a BUNDLE group. > > Alt 2. The answerer accepts the m- line, associates it with a > BUNDLE group, and then sends a new offer which removes the m- line from > the BUNDLE group. > > Alt 3. The answerer rejects the m- line, and then sends a new offer > which adds the m- line outside a BUNDLE group. > > In my opinion, Alt 1 does not work, at least not if the offer contains > identical port values for the m- lines associated with the BUNDLE group. > It would mean that the m- line is not added to a BUNDLE group, but still > has the same port value (at least at the offerer side) as the m- lines > in the BUNDLE group, which is not allowed. > > So, my suggestion would be to specify that the answerer must use Alt 2 > and/or Alt 3. I don't think we should restrict flexibility here when it works and makes sense. I agree that Alt 1 doesn't work *if* the m-line in question shares addr/prot with other m-lines that are also accepted, bundled or not. But the normal first offer won't present that situation. If the addr/port in the m-line in question is unique among all the accepted m-lines, then this should be acceptable. (Note, this is a degenerate case of bundle splitting. There are real use cases for it. If it can be done without a 2nd o/a, then lets allow that.) Thanks, Paul
- [MMUSIC] BUNDLE: Accept m- line, reject bundle Christer Holmberg
- Re: [MMUSIC] BUNDLE: Accept m- line, reject bundle Paul Kyzivat
- Re: [MMUSIC] BUNDLE: Accept m- line, reject bundle Christer Holmberg
- Re: [MMUSIC] BUNDLE: Accept m- line, reject bundle Paul Kyzivat
- Re: [MMUSIC] BUNDLE: Accept m- line, reject bundle Charles Eckel (eckelcu)
- Re: [MMUSIC] BUNDLE: Accept m- line, reject bundle Christer Holmberg
- Re: [MMUSIC] BUNDLE: Accept m- line, reject bundle Dale R. Worley
- Re: [MMUSIC] BUNDLE: Accept m- line, reject bundle Paul Kyzivat
- Re: [MMUSIC] BUNDLE: Accept m- line, reject bundle Cullen Jennings (fluffy)
- Re: [MMUSIC] BUNDLE: Accept m- line, reject bundle Martin Thomson
- Re: [MMUSIC] BUNDLE: Accept m- line, reject bundle Paul Kyzivat
- Re: [MMUSIC] BUNDLE: Accept m- line, reject bundle Martin Thomson
- Re: [MMUSIC] BUNDLE: Accept m- line, reject bundle Christer Holmberg
- Re: [MMUSIC] BUNDLE: Accept m- line, reject bundle Suhas Nandakumar