Re: [MMUSIC] BUNDLE: meaning of "unspecified" when describing "bundle-only"
Cullen Jennings <fluffy@iii.ca> Thu, 13 July 2017 18:25 UTC
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From: Cullen Jennings <fluffy@iii.ca>
In-Reply-To: <D58AB032.1F24F%christer.holmberg@ericsson.com>
Date: Thu, 13 Jul 2017 12:24:55 -0600
Cc: Adam Roach <adam@nostrum.com>, "mmusic@ietf.org" <mmusic@ietf.org>
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References: <9e5fc493-bfba-1a27-149e-1f566a25b411@nostrum.com> <D49AAB4A.155D4%christer.holmberg@ericsson.com> <D58AB032.1F24F%christer.holmberg@ericsson.com>
To: Christer Holmberg <christer.holmberg@ericsson.com>
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Subject: Re: [MMUSIC] BUNDLE: meaning of "unspecified" when describing "bundle-only"
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That works for me. > On Jul 11, 2017, at 7:46 AM, Christer Holmberg <christer.holmberg@ericsson.com> wrote: > > Hi, > > It took a while, but here is my suggestion (based on alternative #2): > > OLD TEXT: > > "The usage of the 'bundle-only' attribute is only defined for a > bundled "m=" line with a zero port value, within an offer. Other > usage is unspecified." > > > NEW TEXT: > > "The usage of the 'bundle-only' attribute is only defined for a > bundled "m=" line with a zero port value, within an offer. Other > usage is unspecified. If an implementation receives, within > an offer or answer, a bundled "m=“ line with a non-zero port value > > and an ‘bundle-only’ attribute associated with the “m=“ line, the > implementation MUST ignore the attribute." > > Regards, > > Christer > > > On 10/01/17 15:18, "mmusic on behalf of Christer Holmberg" > <mmusic-bounces@ietf.org on behalf of christer.holmberg@ericsson.com> > wrote: > >> Hi Adam, >> >> My suggestion would be alternative #2. Because, if an endpoint supports >> the attribute it doesn¹t really matter what the port value is, so there is >> no need to reject the m- line. >> >> Regards, >> >> Christer >> >> >> On 29/12/16 23:15, "mmusic on behalf of Adam Roach" >> <mmusic-bounces@ietf.org on behalf of adam@nostrum.com> wrote: >> >>> We've recently come across an issue with the way the "bundle-only" >>> attribute is described in the current document. The current language >>> regarding port handling reads: >>> >>> The usage of the 'bundle-only' attribute is only defined for a >>> bundled "m=" line with a zero port value, within an offer. Other >>> usage is unspecified. >>> >>> Usually, when we have this kind of language, we still ensure that >>> behavior is well defined, to help avoid unnecessary interop failures. I >>> see a couple of different options here: >>> >>> 1. Remove the final sentence and add language saying that creators of >>> SDP MUST NOT include a "bundle-only" attribute in an m-section that >>> has a non-zero port, and that recipients of such SDP {SHOULD,MUST} >>> reject it; or >>> >>> 2. Retain language saying that including a "bundle-only" attribute in a >>> non-zero m-section is unspecified, but add normative language along >>> the lines of: "implementations that receive an m-section with a >>> non-zero port that also contains a 'bundle-only' attribute MUST >>> ignore the {attribute,port}." >>> >>> I don't have a preference between these choices, but I think we do need >>> clarity. To be absolutely clear, this feedback is based on actual >>> implementation interop failures in the field. This problem is not >>> theoretical. >>> >>> /a >>> >>> _______________________________________________ >>> mmusic mailing list >>> mmusic@ietf.org >>> https://www.ietf.org/mailman/listinfo/mmusic >> >> _______________________________________________ >> mmusic mailing list >> mmusic@ietf.org >> https://www.ietf.org/mailman/listinfo/mmusic > > _______________________________________________ > mmusic mailing list > mmusic@ietf.org > https://www.ietf.org/mailman/listinfo/mmusic
- [MMUSIC] BUNDLE: meaning of "unspecified" when de… Adam Roach
- Re: [MMUSIC] BUNDLE: meaning of "unspecified" whe… Christer Holmberg
- Re: [MMUSIC] BUNDLE: meaning of "unspecified" whe… Christer Holmberg
- Re: [MMUSIC] BUNDLE: meaning of "unspecified" whe… Christer Holmberg
- Re: [MMUSIC] BUNDLE: meaning of "unspecified" whe… Cullen Jennings