extern struct afb_ws *afb_ws_create(struct sd_event *eloop, int fd, const struct afb_ws_itf *itf, void *closure);
extern void afb_ws_destroy(struct afb_ws *ws);
extern void afb_ws_hangup(struct afb_ws *ws);
+extern int afb_ws_is_connected(struct afb_ws *ws);
extern int afb_ws_close(struct afb_ws *ws, uint16_t code, const char *reason);
extern int afb_ws_error(struct afb_ws *ws, uint16_t code, const char *reason);
extern int afb_ws_text(struct afb_ws *ws, const char *text, size_t length);