+/**
+ * Send an ack on the tunnel to confirm the processing of a message.
+ *
+ * @param h Mesh handle.
+ * @param t Tunnel on which to send the ACK.
+ */
+static void
+send_ack (struct GNUNET_MESH_Handle *h, struct GNUNET_MESH_Tunnel *t)
+{
+ struct GNUNET_MESH_LocalAck msg;
+
+ msg.header.type = htons (GNUNET_MESSAGE_TYPE_MESH_LOCAL_ACK);
+ msg.header.size = htons (sizeof (msg));
+ msg.tunnel_id = htonl (t->tid);
+ msg.max_pid = t->pid + 1;
+
+ send_packet (h, &msg.header, t);
+ return;
+}
+
+
+