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-rw-r--r--openbsc/src/libmgcp/mgcp_network.c17
1 files changed, 14 insertions, 3 deletions
diff --git a/openbsc/src/libmgcp/mgcp_network.c b/openbsc/src/libmgcp/mgcp_network.c
index 75d39c19..53f1a20e 100644
--- a/openbsc/src/libmgcp/mgcp_network.c
+++ b/openbsc/src/libmgcp/mgcp_network.c
@@ -237,6 +237,16 @@ void mgcp_patch_and_count(struct mgcp_endpoint *endp, struct mgcp_rtp_state *sta
state->jitter = 0;
state->transit = arrival_time - timestamp;
state->out_stream = state->in_stream;
+ state->out_stream.last_timestamp = timestamp;
+ /* force output SSRC change */
+ state->out_stream.ssrc = rtp_hdr->ssrc - 1;
+ LOGP(DMGCP, LOGL_INFO,
+ "Initializing stream on 0x%x SSRC: %u timestamp: %u "
+ "from %s:%d in %d\n",
+ ENDPOINT_NUMBER(endp), state->in_stream.ssrc,
+ state->seq_offset,
+ inet_ntoa(addr->sin_addr), ntohs(addr->sin_port),
+ endp->conn_mode);
} else if (state->in_stream.ssrc != rtp_hdr->ssrc) {
int32_t tsdelta = state->out_stream.last_tsdelta;
if (tsdelta == 0) {
@@ -286,9 +296,10 @@ void mgcp_patch_and_count(struct mgcp_endpoint *endp, struct mgcp_rtp_state *sta
}
/* Check again, whether the timestamps are still valid */
- check_rtp_timestamp(endp, &state->out_stream, rtp_end, addr,
- seq, timestamp, "output",
- &state->out_stream.last_tsdelta);
+ if (state->out_stream.ssrc == rtp_hdr->ssrc)
+ check_rtp_timestamp(endp, &state->out_stream, rtp_end, addr,
+ seq, timestamp, "output",
+ &state->out_stream.last_tsdelta);
/*
* The below takes the shape of the validation from Appendix A. Check