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Re: [Simple] COMEDIA vs MSRP Relays: Which Connection?

Hi,
 
This is listed as an open issue in my presentation.
 
It is related to an issue raised by Ben a while ago, that comedia also decides which party sends the first MSRP message. 
 
So, combining the solution proposals for both issues: if a client behind a relay is "passive", it would still establish an TCP connection with its relay, but it would not send the first MSRP SEND. 
 
Regards,
 
Christer

________________________________

From: simple-bounces at ietf.org on behalf of Hadriel Kaplan
Sent: Wed 22/07/2009 00:10
To: Ben Campbell; Simple WG
Subject: Re: [Simple] COMEDIA vs MSRP Relays: Which Connection?




I assumed the same: that it's the connection to/from the (last) relay from each side's perspective, facing to the public internet.  As if the Relay were a TURN server, I guess.  In other words, what would have been the first MSRP URI in the use-path list in SDP.

-hadriel

> -----Original Message-----
> From: simple-bounces at ietf.org [mailto:simple-bounces at ietf.org] On Behalf
> Of Ben Campbell
> Sent: Monday, July 20, 2009 5:13 PM
>
> When MSRP relays are present, there will be two or more TCP
> connections involved in a particular session. Which connection is
> being negotiated via COMEDIA?
>
> I _think_ the answer is the connection between boundary relays--that
> is, between the outermost relay of party A and the outermost relay of
> party B. If one party uses a chain of relays, only the outer one would
> require COMEDIA negotiation. I guess you could also look at this as
> the connection that crosses domains, for some vague definition of
> domain.
>
> There might be an interesting case here for when both parties share
> the same relay.
>
>
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