[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




------- Comment #1 from Eric Zhang  2008-11-06 02:14 UTC -------
Created an attachment (id=122071)
 --> (http://bugzilla.gnome.org/attachment.cgi?id=122071&action=view)
patch for gstrtspsrc.c & gstrtspsrc.h to make data passes through the firewalls

I made a small trick to make firewalls forwards data from RTSP server while not
blocks them. The trick is: Just send some UDP packets to the RTSP server before
we send `PLAY' method to RTSP server. Because we know the RTP & RTCP ports in
client and server, so we sends UDP packets to the server first to make the
firewall believes that the connection was initiated by the client so the data
coming next is safe. The result is the firewall will forward data while not
block them.


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