add linphone_core_enable_keep_alive

coreapi/linphonecore.c

@@ -4037,4 +4037,19 @@ const char *linphone_error_to_string(LinphoneReason err){
 	}
 	return "unknown error";
 }
-
+/**
+ * enable signaling keep alive
+ */
+void linphone_core_enable_keep_alive(LinphoneCore* lc,bool_t enable) {
+	if (enable > 0) {
+		sal_set_keepalive_period(lc->sal,lc->sip_conf.keepalive_period);
+	} else {
+		sal_set_keepalive_period(lc->sal,0);
+	}
+}
+/**
+ * Is signaling keep alive
+ */
+bool_t linphone_core_keep_alive_enabled(LinphoneCore* lc) {
+	return sal_get_keepalive_period(lc->sal) > 0;
+}

coreapi/linphonecore.h

@@ -919,6 +919,14 @@ void linphone_core_set_network_reachable(LinphoneCore* lc,bool_t value);
  */
 bool_t linphone_core_is_network_reachabled(LinphoneCore* lc);
 
+/**
+ *  enable signaling keep alive. small udp packet sent periodically to keep udp NAT association
+ */
+void linphone_core_enable_keep_alive(LinphoneCore* lc,bool_t enable);
+/**
+ * Is signaling keep alive
+ */
+bool_t linphone_core_keep_alive_enabled(LinphoneCore* lc);
 
 void *linphone_core_get_user_data(LinphoneCore *lc);
 

coreapi/linphonecore_jni.cc

@@ -614,8 +614,19 @@ extern "C" jstring Java_org_linphone_core_LinphoneCoreImpl_getRing(JNIEnv*  env
 		return NULL;
 	}
 }
+extern "C" void Java_org_linphone_core_LinphoneCoreImpl_enableKeepAlive(JNIEnv*  env
+																,jobject  thiz
+																,jlong lc
+																,jboolean enable) {
+	linphone_core_enable_keep_alive((LinphoneCore*)lc,enable);
 
+}
+extern "C" jboolean Java_org_linphone_core_LinphoneCoreImpl_isKeepAliveEnabled(JNIEnv*  env
+																,jobject  thiz
+																,jlong lc) {
+	return linphone_core_keep_alive_enabled((LinphoneCore*)lc);
 
+}
 //ProxyConfig
 
 extern "C" jlong Java_org_linphone_core_LinphoneProxyConfigImpl_newLinphoneProxyConfig(JNIEnv*  env,jobject  thiz) {

coreapi/sal.h

@@ -249,6 +249,11 @@ ortp_socket_t sal_get_socket(Sal *ctx);
 void sal_set_user_agent(Sal *ctx, const char *user_agent);
 /*keepalive period in ms*/
 void sal_set_keepalive_period(Sal *ctx,unsigned int value);
+/**
+ * returns keepalive period in ms
+ * 0 desactiaved
+ * */
+unsigned int sal_get_keepalive_period(Sal *ctx);
 void sal_use_session_timers(Sal *ctx, int expires);
 void sal_use_one_matching_codec_policy(Sal *ctx, bool_t one_matching_codec);
 int sal_iterate(Sal *sal);

coreapi/sal_eXosip2.c

@@ -1982,6 +1982,9 @@ void sal_set_keepalive_period(Sal *ctx,unsigned int value) {
 	ctx->keepalive_period=value;
 	eXosip_set_option (EXOSIP_OPT_UDP_KEEP_ALIVE, &value);
 }
+unsigned int sal_get_keepalive_period(Sal *ctx) {
+	return ctx->keepalive_period;
+}
 
 const char * sal_address_get_port(const SalAddress *addr) {
 	const osip_from_t *u=(const osip_from_t*)addr;

java/common/org/linphone/core/LinphoneCore.java

@@ -488,5 +488,13 @@ public interface LinphoneCore {
 	public VideoSize getPreferredVideoSize();
 	
 	public PayloadType[] listVideoCodecs();
-
+	/**
+	 * enable signaling keep alive. small udp packet sent periodically to keep udp NAT association
+	 */
+	void enableKeepAlive(boolean enable);
+	/**
+	 * get keep elive mode
+	 * @return true if enable
+ 	 */
+	boolean isKeepAliveEnabled();
 }