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Re: [MMUSIC] RTSP 2.0 SDP issue: Directionality attribute

worley@ariadne.com (Dale R. Worley) Thu, 28 March 2013 17:43 UTC

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Date: Thu, 28 Mar 2013 13:43:05 -0400
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From: worley@ariadne.com
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To: Magnus Westerlund <magnus.westerlund@ericsson.com>
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Cc: mmusic@ietf.org
Subject: Re: [MMUSIC] RTSP 2.0 SDP issue: Directionality attribute
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> Date: Fri, 22 Mar 2013 17:03:36 +0100
> From: Magnus Westerlund <magnus.westerlund@ericsson.com>
> 
> Thanks for the input. I have tried to address your input in this version:
> 
>    This appendix describes how an SDP file determines the operation of
>    an RTSP session.  Thus, it is worth pointing out that the
>    interpretation of the SDP is done in the context of the SDP receiver,
>    which is the one being configured.  This is the same as in SAP
>    [RFC2974]; this differs from SDP Offer/Answer [RFC3264] where the SDP
>    describes what the agent providing the SDP is ready to receive and
>    willing to send.

Sorry, I've dropped the ball on this.  Looking at this text, I'm
thinking that the "reversal" between SAP and offer/answer usage is not
stated as clearly as it could be.  How about copying the wording from
the second sentence into the third?

    This appendix describes how an SDP file determines the operation of
    an RTSP session.  Thus, it is worth pointing out that the
    interpretation of the SDP is done in the context of the SDP receiver,
    which is the one being configured.  This is the same as in SAP
    [RFC2974]; this differs from SDP Offer/Answer [RFC3264] where each
    SDP is interpreted in the context of the agent providing it.

Dale

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