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Re: [Wish] I-D Action: draft-ietf-wish-whip-05.txt - WHIP client only implements DTLS client role

Christer Holmberg <christer.holmberg@ericsson.com> Wed, 26 October 2022 08:04 UTC

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From: Christer Holmberg <christer.holmberg@ericsson.com>
To: Sergio Garcia Murillo <sergio.garcia.murillo@gmail.com>, Christer Holmberg <christer.holmberg=40ericsson.com@dmarc.ietf.org>
CC: "wish@ietf.org" <wish@ietf.org>
Thread-Topic: [Wish] I-D Action: draft-ietf-wish-whip-05.txt - WHIP client only implements DTLS client role
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Archived-At: <https://mailarchive.ietf.org/arch/msg/wish/c9eedWAGLkTN69QICOkH21P20Io>
Subject: Re: [Wish] I-D Action: draft-ietf-wish-whip-05.txt - WHIP client only implements DTLS client role
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Hi,

 

>I am not sure it is a MUST as the idea is to try to give some freedom to the clients to behave "offtrack" of the specs. 

> 

>As the WHIP servers are not enforced to support receiving that setup active attribute, they may as well choose to send an "actpass"  and hope that the

>server answers with a "passive" (which I think is the common case), and drop the call if they receive an "active" in the response.

> 

>Anyway, no hard feelings about this, I can change to MUST if everyone else thinks that it is better. 

 

Implementations can of course indicate whatever they want, but I don’t think we should standardize behavior where one indicates something that it doesn’t support.

 

I also think the following statement is strange:

 

“If the WHIP endpoint does not support an SDP offer

 with an SDP "setup" attribute with an "active" attribute value, it

  SHOULD reject the request with a 422 Unprocessable Entity response.”

 

If you anyway have to implement the support of sending a 422 response, why not implement support of “active”? :)

 

Regards,

 

Christer

 

 

 

 

On Tue, Oct 25, 2022 at 3:16 PM Christer Holmberg <christer.holmberg=40ericsson.com@dmarc.ietf.org <mailto:40ericsson.com@dmarc.ietf.org> > wrote:

Hi,

I think the usage of the setup attribute was discussed in the past, but I 
think the following statement in Section 4.2 is confusing:

"However, if the WHIP client only implements the DTLS client role, it MAY use 
an SDP "setup" attribute with an "active" attribute value."

Shouldn't it say MUST instead of MAY?

Regards,

Christer
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