-bool send_sptps_data(void *handle, uint8_t type, const void *data, size_t len);
-bool receive_sptps_record(void *handle, uint8_t type, const void *data, uint16_t len) __attribute__((__warn_unused_result__));
-void send_packet(struct meshlink_handle *mesh, struct node_t *, struct vpn_packet_t *);
-char *get_name(struct meshlink_handle *mesh) __attribute__((__warn_unused_result__));