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Re: [MMUSIC] SCTP-SDP: Virtual Connection impact

Christer Holmberg <christer.holmberg@ericsson.com> Fri, 03 April 2015 14:40 UTC

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From: Christer Holmberg <christer.holmberg@ericsson.com>
To: Paul Kyzivat <pkyzivat@alum.mit.edu>, "mmusic@ietf.org" <mmusic@ietf.org>
Thread-Topic: [MMUSIC] SCTP-SDP: Virtual Connection impact
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Date: Fri, 03 Apr 2015 14:40:52 +0000
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References: <7594FB04B1934943A5C02806D1A2204B1D78274F@ESESSMB209.ericsson.se> <CAD5OKxvGbJj_rRtLX7rjzkPZ6R8Wg92L2Y6gz1VtpV_etzaSiw@mail.gmail.com> <7594FB04B1934943A5C02806D1A2204B1D78511C@ESESSMB209.ericsson.se> <CAD5OKxum9Dt3vAxwAfa9LWiprSGkYHA1MrLspAee_-T8U=Ccvw@mail.gmail.com> <7594FB04B1934943A5C02806D1A2204B1D786CD9@ESESSMB209.ericsson.se> <CAD5OKxuj2TjgN2an9DywrQbBi38u38QSuuQb_eAoGU61DC8ENQ@mail.gmail.com> <7594FB04B1934943A5C02806D1A2204B1D787E27@ESESSMB209.ericsson.se> <CAD5OKxto0Cqmf9C1-Gg7O2+WQdaRwNGszKGQf4ccSUP7K9ZOEw@mail.gmail.com> <7594FB04B1934943A5C02806D1A2204B1D788924@ESESSMB209.ericsson.se> <CAD5OKxt4VCJGVLrzSib6HL+S8S90apwZ7_uRFygUfNeNddesFA@mail.gmail.com> <7594FB04B1934943A5C02806D1A2204B1D78931C@ESESSMB209.ericsson.se> <551DAD38.5000605@alum.mit.edu>
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Subject: Re: [MMUSIC] SCTP-SDP: Virtual Connection impact
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Hi,

>ISTM that a=connection:new is the better answer. The forbidding of this for SRTP-DTLS seems like a bug rather than a >feature. Does anyone know the reason for it?

I don't know the reason, but I ASSUME the reason was because the connection attribute was defined for a connection oriented transport (TCP), which SRTP-DTLS is not (well, at least it wasn't when SRTP-DTLS was defined - after that we got TCP-ICE etc).

In any case, I don't think it would be too late to allow usage of the attribute for SRTP-DTLS. It would be a straight forward mechanism, which could be used both in the ICE and non-ICE case. 

Regards,

Christer

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