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| author | Martin Storsjö <martin@martin.st> | 2010-02-16 22:50:50 +0000 |
|---|---|---|
| committer | Ronald S. Bultje <rsbultje@gmail.com> | 2010-02-16 22:50:50 +0000 |
| commit | 9c8fa20d7e60760f117c2123a51137db1ac91682 (patch) | |
| tree | 1167eca1e68c73f232872ebab1f925d4e0b673e7 /libavformat/rtsp.c | |
| parent | fe74099aee7b2c4f918194c4ed560e244677df7a (diff) | |
| download | ffmpeg-9c8fa20d7e60760f117c2123a51137db1ac91682.tar.gz | |
When using RTP-over-UDP, send dummy packets during stream setup, similar to
what e.g. RealPlayer does. This allows proper port forwarding setup in NAT-
based environments.
Patch by Martin Storsjö <$firstname at $firstname dot st>.
Originally committed as revision 21856 to svn://svn.ffmpeg.org/ffmpeg/trunk
Diffstat (limited to 'libavformat/rtsp.c')
| -rw-r--r-- | libavformat/rtsp.c | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/libavformat/rtsp.c b/libavformat/rtsp.c index 8bc940dd92..f379b781b0 100644 --- a/libavformat/rtsp.c +++ b/libavformat/rtsp.c @@ -1146,6 +1146,12 @@ static int make_setup_request(AVFormatContext *s, const char *host, int port, err = AVERROR_INVALIDDATA; goto fail; } + /* Try to initialize the connection state in a + * potential NAT router by sending dummy packets. + * RTP/RTCP dummy packets are used for RDT, too. + */ + if (!(rt->server_type == RTSP_SERVER_WMS && i > 1)) + rtp_send_punch_packets(rtsp_st->rtp_handle); break; } case RTSP_LOWER_TRANSPORT_UDP_MULTICAST: { |