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Re: alternate RTP profiles in SDP offer/answer
- To: "Desineni, Harikishan" <hdesinen@xxxxxxxxxxxx>
- Subject: Re: alternate RTP profiles in SDP offer/answer
- From: Randell Jesup <rjesup@xxxxxxxxx>
- Date: Tue, 31 Oct 2006 18:27:23 -0500
- Cc: "Dan Wing" <dwing@xxxxxxxxx>, "Joerg Ott" <jo@xxxxxxxxxxxxx>, "Francois Audet" <audet@xxxxxxxxxx>, <mmusic@xxxxxxxx>, "Joerg Ott" <jo@xxxxxxx>, <carrara@xxxxxx>, "Flemming Andreasen" <fandreas@xxxxxxxxx>, "Hadriel Kaplan" <HKaplan@xxxxxxxxxxxxxx>, <ietf-rtpsec@xxxxxxx>, "Leung, Nikolai" <nleung@xxxxxxxxxxxx>, "Ludwin, Albert" <aludwin@xxxxxxxxxxxx>, "Srinivasamurthy, Naveen" <naveens@xxxxxxxxxxxx>, "Jayaram, Ranjith" <rjayaram@xxxxxxxxxxxx>
- In-reply-to: <2CA3E1B6CEC064449CAA7D0FAB46079B0227B426@xxxxxxxxxxxxxxxxxxxxxx> (Harikishan Desineni's message of "Tue, 31 Oct 2006 14:26:34 -0800")
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- Reply-to: Randell Jesup <rjesup@xxxxxxxxx>
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"Desineni, Harikishan" <hdesinen@xxxxxxxxxxxx> writes:
>> > Indeed, RFC4585 is referring to RFC 3388 for such grouping. Per
>> > RFC4585, overloading two "m=" lines isn't a violation of the standard
>> > when negotiating RTP/AVP and RTP/AVPF profiles.
>>
>> Unfortunately, though, SDP parsers that don't implement
>> RFC4585 aren't aware of RFC4585's permission to do this.
>
>A reasonably good SDP parser which understands grouping (RFC3388) and
>FID semantics would reject a grouped "m=" line offered with unknown RTP
>profile.
There's an SDP parser (and application) that understands and handles RFC 3388?
1/2 :-) Seriously, I'm sure there are some, and I'm also pretty darn certain
they're rare. I'd love it if I was wrong.
--
Randell Jesup, Worldgate (developers of the Ojo videophone), ex-Amiga OS team
rjesup@xxxxxxxxx
"The fetters imposed on liberty at home have ever been forged out of the weapons
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- James Madison, 4th US president (1751-1836)