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Re: [rtcweb] JSEP: Order of m- lines in multiple PeerConnections

Christer Holmberg <christer.holmberg@ericsson.com> Wed, 16 October 2013 12:16 UTC

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From: Christer Holmberg <christer.holmberg@ericsson.com>
To: "rtcweb@ietf.org" <rtcweb@ietf.org>
Thread-Topic: JSEP: Order of m- lines in multiple PeerConnections
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Date: Wed, 16 Oct 2013 12:16:24 +0000
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Cc: "Cullen Jennings (fluffy@cisco.com)" <fluffy@cisco.com>
Subject: Re: [rtcweb] JSEP: Order of m- lines in multiple PeerConnections
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Hi,

Any comments on this issue? I'd like to have some e-mail discussions before Vancouver.

I'd also like it to be listed as an issue - unless, of course, I have missed something, and it really isn't an issue :)

Regards,

Christer

From: rtcweb-bounces@ietf.org [mailto:rtcweb-bounces@ietf.org] On Behalf Of Christer Holmberg
Sent: 30. syyskuuta 2013 11:08
To: rtcweb@ietf.org
Subject: [rtcweb] JSEP: Order of m- lines in multiple PeerConnections

Hi,

JSEP talks about the usage of multiple PeerConnection to support forking, i.e. for each new forked leg (SIP: early dialog) a new PeerConnection is created.

As has been indicated, as each new PeerConnection will have its own set of address properties, ICE properties etc, so a new Offer will have to be created and sent to inform the remote about the new properties.

So far so I good.

I also assume that the same camera/mic/etc sources are connection to each PeerConnection, so the number of m- lines in the Offer of the new PeerConnection should be the same.

However, according the 3264, the ORDER of the m- lines also need to be kept the same.

So, my question is: how can I ensure that the order of the m- lines in an Offer for a new PeerConnection is the same as in an Offer for an old PeerConnection?

Regards,

Christer

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