Re: [rtcweb] RTCWEB data channel protocol: Mandated to use?

On 01/28/2014 09:28 AM, Christer Holmberg wrote:
>
> Hi,
>
>  
>
> At the CLUE virtual interim yesterday, we discussed the usage of the
> RTCWEB data channel also for CLUE. It would allow us to re-use what
> RTCWEB has done, and it would provide interoperability between CLUE
> entities and RTCWEB.
>
>  
>
> *Q1*: One question that came up is whether RTCWEB *MANDATES* the usage
> of the RTCWEB data channel protocol? OR, is it possible to simply
> establish two SCTP streams (as defined in
> draft-ietf-rtcweb-data-channel-06), and start using it?
>

My understanding has been the latter - externally negotiated data
channels are explicitly permitted.

draft-ietf-rtcweb-data-channel-06 section 6.5:

6.5.  Opening a Channel

   Data channels can be opened by using internal or external
   negotiation.  The details are out of scope of this document.

   A simple protocol for internal negotiation is specified in
   [I-D.ietf-rtcweb-data-protocol] and MUST be supported.

"MUST be supported" is not the same as "MUST be used".

>  
>
> Regards,
>
>  
>
> Christer
>
>
>
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