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

"Cullen Jennings (fluffy)" <fluffy@cisco.com> Fri, 18 October 2013 18:14 UTC

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From: "Cullen Jennings (fluffy)" <fluffy@cisco.com>
To: Christer Holmberg <christer.holmberg@ericsson.com>
Thread-Topic: [rtcweb] JSEP: Order of m- lines in multiple PeerConnections
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Date: Fri, 18 Oct 2013 18:14:51 +0000
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Cc: "rtcweb@ietf.org" <rtcweb@ietf.org>
Subject: Re: [rtcweb] JSEP: Order of m- lines in multiple PeerConnections
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On Oct 18, 2013, at 12:03 PM, Christer Holmberg <christer.holmberg@ericsson.com>
 wrote:

> Hi,
> 
>> By Invite with replaces, I mean an INVITE in new SIP dialog that uses the replaces header ( http://www.ietf.org/rfc/rfc3891.txt ) with the context of the old SIP dialog. 
>> That is supported and used for lots of cases by PBX that act as B2BUA because it becomes and effective way to do things like totally change the number m-lines. 
>> 
>> Well, when creating a new Offer to use with invite with replaces, the number of m lines don't have to match at all. You are not even required to have the same media types. So it seems like that would do it. 
> 
> True, but I don't think one should have to do that.
> 
> The initial Offer, sent by PC#1, has reached remote entities R_1 and R_2, and both have sent an Answer. For R_2 I now want to create a new PC, PC#2, and send a new Offer with the address properties of PC#2. 
> 
> Regards,
> 
> Christer
> 

Yah, I understand - that solution is basically the cloning proposal.

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