void device_handler_cancel_default(struct device_handler *handler);
void device_handler_update_config(struct device_handler *handler,
struct config *config);
void device_handler_process_url(struct device_handler *handler,
const char *url, const char *mac, const char *ip);
void device_handler_cancel_default(struct device_handler *handler);
void device_handler_update_config(struct device_handler *handler,
struct config *config);
void device_handler_process_url(struct device_handler *handler,
const char *url, const char *mac, const char *ip);