The following patch writes a log message when a packet is discarded due
to mismatched UDP source address.
This log message would have saved me two days of debugging wondering
where my packets were going.
Index: pjmedia/src/pjmedia/transport_udp.c
===================================================================
--- pjmedia/src/pjmedia/transport_udp.c (revision 4883)
+++ pjmedia/src/pjmedia/transport_udp.c (working copy)
@@ -483,6 +483,8 @@
udp->rtp_src_cnt++;
if (udp->rtp_src_cnt < PJMEDIA_RTP_NAT_PROBATION_CNT) {
+ PJ_LOG(4, (udp->base.name,
+ "Discarded packet from unexpected source address"));
discard = PJ_TRUE;
} else {
