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rtsp: punch holes again after pause

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When a client behind a NAT issues a pause command, and stay paused for a
long time, the router may stop the RTP/RTCP port redirection. Resend the
hole punching packets before each PLAY command to cause the router to
restart the port redirection in that case.

Move the existing code for sending the packets from the SETUP phase
to the PLAY phase.

Signed-off-by: Martin Storsjö <martin@martin.st>
This commit is contained in:
Gilles Chanteperdrix 2015-02-22 07:59:55 +01:00 • committed by Martin Storsjö
parent 061c489895
commit cdcc370293
2 changed files with 12 additions and 7 deletions
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12
libavformat/rtspdec.c
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@ -504,6 +504,18 @@ static int rtsp_read_play(AVFormatContext *s)
av_log(s, AV_LOG_DEBUG, "hello state=%d\n", rt->state);
rt->nb_byes = 0;
if (rt->lower_transport == RTSP_LOWER_TRANSPORT_UDP) {
for (i = 0; i < rt->nb_rtsp_streams; i++) {
RTSPStream *rtsp_st = rt->rtsp_streams[i];
/* 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 (rtsp_st->rtp_handle &&
!(rt->server_type == RTSP_SERVER_WMS && i > 1))
ff_rtp_send_punch_packets(rtsp_st->rtp_handle);
}
}
if (!(rt->server_type == RTSP_SERVER_REAL && rt->need_subscription)) {
if (rt->transport == RTSP_TRANSPORT_RTP) {
for (i = 0; i < rt->nb_rtsp_streams; i++) {