[gstreamer-bugs] [Bug 559545] New: 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
           Summary: rtspsrc could not receive data from RTSP server because
                    of the firewall in the Internet
           Product: GStreamer
           Version: 0.10.20
          Platform: Other
        OS/Version: All
            Status: UNCONFIRMED
          Severity: normal
          Priority: Normal
         Component: gst-plugins-good
        AssignedTo: gstreamer-bugs at lists.sourceforge.net
        ReportedBy: chao.zhang at access-company.com
         QAContact: gstreamer-bugs at lists.sourceforge.net
     GNOME version: 2.19/2.20
   GNOME milestone: Unspecified


Please describe the problem:
Rtspsrc sends `PLAY' method after `OPTIONS, DESCRIBE, SETUP', then the RTSP
server begins to send data to the client. But the data cannot be received by
rtspsrc because the firewall in the Internet blocks these data by default.
Especially, when your client machine is in a NAT network environment, the
firewall will block all the data comes from outside by default except your
client machine initiates this connection.
This will make rtspsrc plays a RTSP clip failed.

Steps to reproduce:
1. Construct a NAT environment which blocks all data from outside network by
default.
2. Use rtspsrc to play a rtsp movie. E.g: a movie from m.youtube.com.
3. Rtspsrc cannot receive any data and playout fails.


Actual results:
The playout fails and rtspsrc reports that it receives no data.

Expected results:
Rtspsrc should do something to make data passes through the firewalls.

Does this happen every time?
Yes

Other information:


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