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Re: [MMUSIC] ICE and RTCP host components

Roman Shpount <roman@telurix.com> Fri, 23 October 2015 17:19 UTC

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Date: Fri, 23 Oct 2015 13:18:53 -0400
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From: Roman Shpount <roman@telurix.com>
To: Harald Alvestrand <harald@alvestrand.no>
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Cc: "mmusic@ietf.org" <mmusic@ietf.org>
Subject: Re: [MMUSIC] ICE and RTCP host components
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On Fri, Oct 23, 2015 at 12:48 PM, Harald Alvestrand <harald@alvestrand.no>
wrote:

> On 10/22/2015 07:22 AM, Roman Shpount wrote:
>
> Basically, end points must implement ICE and be deployed with TURN servers
> to play well with other end points. If you implement ICE with STUN servers
> only, one would need to make sure to set up connections only to end points
> they control, which implement ICE or at least SDP rtcp attribute.
> Everything else breaks in interesting and unpleasant ways. Building
> anything new now without ICE, and consent to send traffic which is part of
> ICE, would be highly dangerous and can be used for DOS attacks. So, I think
> it might be safer to remove interop with legacy.from anything that supports
> ICE, and require that remote party implements at least ice-lite, or no
> media flow will be established.
>
>
> RTCP/RTP multiplexing works for all cases where anything works at all.
>
> Legacy (RTCP port = RTP port + 1) doesn't.
>
> Time to give up on legacy.
>

Can we also give up on legacy interop for ICE? Let's make ICE work iwth ICE
enabled end points only and stop worrying what goes into c= line address,
m= line port, and SDP rtcp attribute. If anybody needs to support legacy,
put the media proxy on the RTP path.
_____________
Roman Shpount

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