[MMUSIC] Range Header In Play Responses

[Thomas Zeng <zeng@PacketVideo.COM>]

Hi:

During the Jan 22, 2003 RTSP telecon, we discussed Range header in PLAY
reponses in the context of option tag play.basic.
In current draft (draft-ietf-mmusic-rfc2326bis-02.txt), PLAY Range response
is required for on demand media (see section 10.5).
It was decided to make this an requirement for live streaming as well. 

Here is the proposed changes to section 10.5 and section 14 (examples) in
draft-ietf-mmusic-rfc2326bis-02.txt. Each change is separated by "-----"'s,
and instructions on how to make the changes are put in square brackets.

Your comments are always welcome.

Thanks
thomas

---------------------------------
[insert the following to Section 10.5, before the paragraph started with
"For a on-demand stream, the server MUST reply with the actual range...]

[new paragraph] Server MUST include a "Range" header in its Play response.
When playing live media, the Play response MUST use one, and only one, of
the two
Range headers below:

Range: now-

- or -

Range: 0-

Here in live mode "now" happens to mean "0"  in NPT time space for this
session.

----------------------------------------------------------------------------
--------------------------------------
[change section 14.2, add the following right before the begining of actual
RTSP DESCRIBE request]

In this example we assume the length of the presentation is 600 seconds.

[Also in section 14.2, Add a range header to PLAY response]

Range: 0-600


-------------------------------------------------------
[change section 14.3, add the following right before the begining of actual
RTSP DESCRIBE request]

In this example we assume the length of the presentation is 600 seconds.

[change the example RTSP conversation in section 14.3 to add the following
"Range" header to PLAY reponse]

Range: 0-600

------------------------------

------------------------------
[change section 14.4 Live Media example, add the following "Range" header to
PLAY reponse]

Range: now-

------------------------------



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