[gstreamer-bugs] [Bug 559545] rtspsrc could not receive data from RTSP server because of the firewall in the Internet

[GStreamer (bugzilla.gnome.org)]

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  GStreamer | gst-plugins-good | Ver: 0.10.20

Eric Zhang changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|NEEDINFO                    |UNCONFIRMED




------- Comment #5 from Eric Zhang  2008-11-13 01:26 UTC -------
OK, First I tried to play the movie on m.youtube.com and used `tcpdump' to
monitor the incoming packets -- there were no packets come in so the udpsrc
cannot receive any data. Then, I patched gstrtspsrc.c to make it send dummy udp
packets to youtube server -- the source port is the RTP & RTCP ports we
allocated during SETUP stage and the destination port is the RTP & RTCP ports
which youtube server allocated. After that, I used `tcpdump' to monitor the
incoming packets and found I received packets from youtube. That's it.

I also used `tcpdump' to monitor the realplayer's behavior and found that
realplayer will also send dummy udp packets to youtube server to make packets
pass through the firewalls.

So I think perhaps you can try `tcpdump' to monitor the behavior of your
program -- does it indeed send out dummy udp packets? And the
source/destination ports are correct?

P.S: If you are not familiar with tcpdump, you can try `wireshark' which has a
GUI interface and very easy to operate to monitor your network stuffs.

You also mentioned you wanna add these logics to udpsrc. I think this is a
great idea. I am looking forward to see this feature in next gst-plugins-good
release.


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