mgcp: FreeSWITCH requiresn us to provide the o= and t= param
The SDP file for FreeSWITCH should contain o= (Origin) and the
t= (Timing) for the session. The data of the Origin should be
globally unique but this is not the case yet. We will need to
store the (NTP) time of the creation of the endpoint.
diff --git a/openbsc/src/libmgcp/mgcp_protocol.c b/openbsc/src/libmgcp/mgcp_protocol.c
index 44a3b87..a81c422 100644
--- a/openbsc/src/libmgcp/mgcp_protocol.c
+++ b/openbsc/src/libmgcp/mgcp_protocol.c
@@ -181,12 +181,14 @@
snprintf(sdp_record, sizeof(sdp_record) - 1,
"I: %u\n\n"
"v=0\r\n"
+ "o=- %u 23 IN IP4 %s\r\n"
"c=IN IP4 %s\r\n"
+ "t=0 0\r\n"
"m=audio %d RTP/AVP %d\r\n"
"a=rtpmap:%d %s\r\n",
- endp->ci, addr, endp->net_end.local_port,
- endp->bts_end.payload_type, endp->bts_end.payload_type,
- endp->tcfg->audio_name);
+ endp->ci, endp->ci, addr, addr,
+ endp->net_end.local_port, endp->bts_end.payload_type,
+ endp->bts_end.payload_type, endp->tcfg->audio_name);
return mgcp_create_response_with_data(200, " OK", msg, trans_id, sdp_record);
}