Re: [rtcweb] Data Channel Protocol: Data before DATA_CHANNEL_ACK

On Feb 10, 2014, at 9:18 PM, Christer Holmberg <christer.holmberg@ericsson.com> wrote:

> 
> 
>> I think what is already in the standard is sufficient for your use case.  You just need to add a little application-specific signalling.  I don't think the in-band signalling is the right place to put things like this.
> 
> If it is sufficient to use in-band signalling to say ”I would like to send you this data”, I think it is equally sufficient to use in-band signaling to reply “No, I don’t want that data”...
> 
> Anyway, if people don't think it's needed, then I guess one can simply reset the stream.
Exactly. If the peer resets the stream before sending a DATA_CHANNEL_ACK, it is an error.
Section 6 of draft-ietf-rtcweb-data-protocol-02.txt contains

Therefore, receiving an SCTP stream reset request for a stream on which no DATA_CHANNEL_ACK message has been received indicates to the sender of the corresponding DATA_CHANNEL_OPEN message the failure of the data channel setup procedure.

Best regards
Michael
> 
> Regards,
> 
> Christer
> 
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