Handle case where ICE is activated and the configured STUN server do not reply.

coreapi/misc.c

@@ -692,17 +692,25 @@ void linphone_core_gather_ice_candidates(LinphoneCore *lc, LinphoneCall *call)
 	} while (!((audio_gatherings[0].response == TRUE) && (audio_gatherings[1].response == TRUE)
 		&& (!call->params.has_video || ((video_gatherings[0].response == TRUE) && (video_gatherings[1].response == TRUE)))));
 
-	ice_session_compute_candidates_foundations(ice_session);
-	ice_session_eliminate_redundant_candidates(ice_session);
-	ice_session_choose_default_candidates(ice_session);
+	if ((audio_gatherings[0].response == FALSE) || (audio_gatherings[1].response == FALSE)
+		|| (call->params.has_video && ((video_gatherings[0].response == FALSE) || (video_gatherings[1].response == FALSE)))) {
+		/* Failed some STUN checks, deactivate ICE. */
+		ice_session_destroy(ice_session);
+		ice_session = NULL;
+		sal_op_set_ice_session(call->op, ice_session);
+	} else {
+		ice_session_compute_candidates_foundations(ice_session);
+		ice_session_eliminate_redundant_candidates(ice_session);
+		ice_session_choose_default_candidates(ice_session);
+	}
 
 	close_socket(audio_gatherings[0].sock);
 	close_socket(audio_gatherings[1].sock);
-	ice_dump_candidates(audio_check_list);
+	if (ice_session != NULL) ice_dump_candidates(audio_check_list);
 	if (call->params.has_video && (video_check_list != NULL)) {
 		if (video_gatherings[0].sock != -1) close_socket(video_gatherings[0].sock);
 		if (video_gatherings[1].sock != -1) close_socket(video_gatherings[1].sock);
-		ice_dump_candidates(video_check_list);
+		if (ice_session != NULL) ice_dump_candidates(video_check_list);
 	}
 }
 

coreapi/sal_eXosip2_sdp.c

@@ -373,7 +373,7 @@ static void add_line(sdp_message_t *msg, int lineno, const SalStreamDescription
 	}
 
 	/*only add a c= line within the stream description if address are differents*/
-	if (strcmp(rtp_addr,sdp_message_c_addr_get(msg, -1, 0))!=0){
+	if (rtp_addr[0]!='\0' && strcmp(rtp_addr,sdp_message_c_addr_get(msg, -1, 0))!=0){
 		bool_t inet6;
 		if (strchr(rtp_addr,':')!=NULL){
 			inet6=TRUE;