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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/rtpdec.h | |
| 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/rtpdec.h')
| -rw-r--r-- | libavformat/rtpdec.h | 13 |
1 files changed, 13 insertions, 0 deletions
diff --git a/libavformat/rtpdec.h b/libavformat/rtpdec.h index 1a243f89c8..92d519684f 100644 --- a/libavformat/rtpdec.h +++ b/libavformat/rtpdec.h @@ -74,6 +74,19 @@ void rtp_get_file_handles(URLContext *h, int *prtp_fd, int *prtcp_fd); #endif /** + * Send a dummy packet on both port pairs to set up the connection + * state in potential NAT routers, so that we're able to receive + * packets. + * + * Note, this only works if the NAT router doesn't remap ports. This + * isn't a standardized procedure, but it works in many cases in practice. + * + * The same routine is used with RDT too, even if RDT doesn't use normal + * RTP packets otherwise. + */ +void rtp_send_punch_packets(URLContext* rtp_handle); + +/** * some rtp servers assume client is dead if they don't hear from them... * so we send a Receiver Report to the provided ByteIO context * (we don't have access to the rtcp handle from here) |