Re: [MMUSIC] draft-ejzak-mmusic-data-channel-sdpneg - "label" optional in a=dcmap?

[Paul Kyzivat <[e-mail]>]

Sounds reasonable to me.

On 11/25/14 10:43 AM, Juergen Stoetzer-Bradler wrote:
> Hi,
>
> The ABNF rules in draft-ejzak-mmusic-data-channel-sdpneg-02's section
> 5.1.1.1 allow the "label" parameter to _not_ being present in a=dcmap
> attribute lines.
> However, the "label" related description in section 5.1.1.2 says:
> "...Label is a mandatory parameter. ...".
>
> Recent CLUE related discussions indicate that there may be use cases,
> where applications may not need to convey data channel label values in
> draft-ejzak-mmusic-data-channel-sdpneg based SDP offers or answers.
>
> Therefore we would propose to actually make the "label" parameter
> optional in a=dcmap attribute lines and to replace section 5.1.1.2's
> sentence "Label is a mandatory parameter" with
>
>      "Label is an optional parameter. If the label parameter is not
> present, then its value defaults to the empty string.
>
> Note: The empty string may also be explicitly used as "label" value,
> such that label="" is equivalent to the "label" parameter not being
> present at all.
> [I-D.ietf-rtcweb-data-protocol] allows the DATA_CHANNEL_OPEN message's
> "Label" value to be an empty string."
>
> Would this be agreeable?
>
> Thanks,
> Juergen
> JSB_email_signature
>
>
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