Re: [Simple] COMEDIA vs MSRP Relays: Shared Connections

[Hadriel Kaplan <HKaplan at acmepacket.com>]

I'm not sure I follow you - Comedia has a "connection:existing" attribute setting to re-use the same connection (e.g., in a new offer).  Or do you mean of two separate media m= lines?

-hadriel

> -----Original Message-----
> From: simple-bounces at ietf.org [mailto:simple-bounces at ietf.org] On Behalf
> Of Ben Campbell
> 
> How does the COMEDIA negotiation interact with the TCP-connection-
> sharing features of MSRP? We negotiate sessions in the SDP offer/
> answer, not connections per se. COMEDIA implicitly assumes a one-to-
> one correspondence between these, but MSRP explicitly allows multiple
> sessions to use the same TCP connection.
> 
> I can see two approaches. One would be that the COMEDIA attributes are
> only relevant if you have to create a new connection. If a reusable
> connection already exists, you just use it. Alternatively, we could
> state that a connection is only reuseable if it's direction matches
> the COMEDIA attributes, and if devices wanted to reuse an existing
> connection, they would either omit COMEDIA entirely, or choose COMEDIA
> attributes that match the connection.
> 
> Neither of those approaches seems obviously wrong to me. I suspect
> there may be some traps here, though--we should analyze this pretty
> closely.
> 
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