+ */
+void linphone_tunnel_config_set_port(LinphoneTunnelConfig *tunnel, int port);
+
+/**
+ * Get tls port of server.
+ *
+ * @param tunnel configuration object
+ */
+int linphone_tunnel_config_get_port(const LinphoneTunnelConfig *tunnel);
+
+/**
+ * Set the remote port on the tunnel server side used to test udp reachability.
+ *
+ * @param tunnel configuration object
+ * @param remote_udp_mirror_port remote port on the tunnel server side used to test udp reachability, set to -1 to disable the feature
+ */
+void linphone_tunnel_config_set_remote_udp_mirror_port(LinphoneTunnelConfig *tunnel, int remote_udp_mirror_port);
+
+/**
+ * Get the remote port on the tunnel server side used to test udp reachability.
+ *
+ * @param tunnel configuration object
+ */
+int linphone_tunnel_config_get_remote_udp_mirror_port(const LinphoneTunnelConfig *tunnel);
+
+/**
+ * Set the udp packet round trip delay in ms for a tunnel configuration.
+ *
+ * @param tunnel configuration object