On Mon, Feb 12, 2007 at 05:07:37PM -0800, Greg J. Ogonowski wrote:
> Michael-
>
> I have had nothing but trouble with the Netgear family of
> routers/firewalls and RTSP/RTP/UDP streams.
> Netgear has been unresponsive to these issues, as I have contacted
> them numerous times.
>
> What I can tell you, is that QuickTime WILL NOT connect using UDP
> through many of the Netgear routers/firewalls, however RealPlayer
> WILL. There is some sort of built in RealPlayer exception in their
> devices. I have tried to configure them manually to pass UDP for
> QuickTime, to no success. This being said, it will be necessary to
> connect using HTTP Tunneling in QuickTime, which it should auto
> negotiate to, at least it does here in our lab.
>
> If anyone else has any insight to the RealPlayer exception in Netgear
> routers/firewalls, I would be very interested in this information,
> especially how to solve the QuickTime player issues. I would like to
> publish this information in our new up and coming Orban Opticodec-PC
> Technical Manual.
>
This is probably old news to you, but I've noticed two differences between
them which are worth mentioning:
1) RealPlayer actually supports interleaving RTSP/RTP. QuickTime goes from
RTP over UDP straight to interleaved RTSP/RTP over the HTTP tunnel.
RealPlayer, by default, does RTSP/RTP+UDP, then interleaved RTSP/RTP, then
interleaved RTSP/RTP+HTTP tunneling.
2) RealPlayer and QuickTime Player select different starting client RTP
ports. I'm might have it backward or totally wrong, but I believe QuickTime
Player (probably using reycled code from QTSS) will start with 6970,
whereas, IIRC, RealPlayer doesn't. Maybe the NetGear blocks by default what
they believe to be RTP serving?
Anyhow, that's where I start hunting the problem down, but I suspect you're
way past this.
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