Re: CR: rtsp tweaks for keepalive

luca.allegrinsn.com wrote:
> Hi,
> 
> I'm working in Opeartor streaming project and I have
experienced many of 
> following error in a live streaming session (.rm
file):
> 
> - handset (Motorola/Ericsson) sends RTSP SET PARAMETER
with Pong during 
> the streaming session
> - Server replies with "451 Parameter not
understood"
> - handset closes the connection (Teardown)
> 
> I'm wondering whether the probelm is a behaviour,
not-compliant to spec, 
> of handsets or helix issue.
> Can you please clarify how to avoid this kind of
errors?
> Operator has Helix v.10.09.
> 
> Thanks in advance for your support.

Those should be the keep alive messages. The server should
just
ignore any message it doesn't understand, which it looks
like
it is doing. Once the server responds with an error the
client
should stop sending those type of messages. In the case
above
it sounds like the client is taking that as a serious error
and
aborting the connection. I don't think it should.

Since this is a live .rm stream, I assume this is a
RealServer?
RealServers should understand those messages since we have
been using them for so long. Perhaps there is a proxy in
the
way that doesn't understand them?

what client is on the handset exactly?

The server folks may chime in with better information.

--greg.



> 
> Best Reagrds,
> Luca



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If SET_PARAM request includes "ping: pong" header
then server replies with
"451 Parameter Not Understood" as "ping"
header is not defined and not
understood by server.
If you are using "ping: pong" for just keep alive
purpose, your client
should ignore the response and from response infer that
session is alive.

-Irfan

-----Original Message-----
From: helix-server-dev-bounceshelixcommunity.org
[mailto:helix-server-dev-bounceshelixcommunity.org] On
Behalf Of Greg
Wright
Sent: Tuesday, February 26, 2008 11:56 PM
To: luca.allegrinsn.com
Cc: helix-client-devhelixcommunity.org; helix-server-devhelixcommunity.org
Subject: Re: [Helix-server-dev] CR: rtsp tweaks for
keepalive

luca.allegrinsn.com wrote:
> Hi,
> 
> I'm working in Opeartor streaming project and I have
experienced many of 
> following error in a live streaming session (.rm
file):
> 
> - handset (Motorola/Ericsson) sends RTSP SET PARAMETER
with Pong during 
> the streaming session
> - Server replies with "451 Parameter not
understood"
> - handset closes the connection (Teardown)
> 
> I'm wondering whether the probelm is a behaviour,
not-compliant to spec, 
> of handsets or helix issue.
> Can you please clarify how to avoid this kind of
errors?
> Operator has Helix v.10.09.
> 
> Thanks in advance for your support.

Those should be the keep alive messages. The server should
just
ignore any message it doesn't understand, which it looks
like
it is doing. Once the server responds with an error the
client
should stop sending those type of messages. In the case
above
it sounds like the client is taking that as a serious error
and
aborting the connection. I don't think it should.

Since this is a live .rm stream, I assume this is a
RealServer?
RealServers should understand those messages since we have
been using them for so long. Perhaps there is a proxy in
the
way that doesn't understand them?

what client is on the handset exactly?

The server folks may chime in with better information.

--greg.



> 
> Best Reagrds,
> Luca



_______________________________________________
Helix-server-dev mailing list
Helix-server-devhelixcommunity.org
http://lists.helixcommunity.org/mailman/listinf
o/helix-server-dev


_______________________________________________
Helix-server-dev mailing list
Helix-server-devhelixcommunity.org
http://lists.helixcommunity.org/mailman/listinf
o/helix-server-dev