Subject: [MMUSIC] RTSP state machine

From: Roman Shpount <[email-masked]>
Date: 03 Mar 2002 23:24:05 GMT

On Fri, Mar 01, 2002 at 02:31:59PM -0800, Thomas Zeng wrote:
> Hello Tom:
> 
> You mentioned below that "all current implementations handle end of range
> notification
> via the transport." 
> 
> Actually sometimes it is very inconvenient for transport to know the end of
> range, if the range is openned ended, e.g., "0-"(such as those for live
> streaming).
> Here is an example:
> 
> If media is carried by RTP over UDP, the server can send RTCP BYE packet at
> the end of the
> range. Since RTCP BYE is also carried over UDP, there is no guarrantee that
> client will
> receive it at all.
> 
> How do you propose to solve this problem without a reliable notification via
> RTSP? I think someone from another company suggested TEARDOWN from S->C for
> this exact purpose.

Tom Marshall wrote:

> Why not continue sending RTCP BYE messages until the client acknowledges
> with a PAUSE or TEARDOWN?  This would be consistent with the server
> remaining in the play state (no automatic server state transition).

Actually, you won't need this. You can detect channel disconnect by not receiving RTCP for a certain period of time. It is the way RTP channel disconnect detection generally works. 
___________________________________
Roman Shpount, VP of Technology
aTelo, Inc. 
2107 Wilson Blvd., Suite 301 
Arlington, VA 22201 
PCN: 703-621-4040 for voice / fax
www.atelo.com

_______________________________________________
mmusic mailing list
[email-masked]
https://www1.ietf.org/mailman/listinfo/mmusic