extern bool send_ack(struct connection_t *);
extern bool send_status(struct connection_t *, int, const char *);
extern bool send_error(struct connection_t *, int, const char *);
extern bool send_ack(struct connection_t *);
extern bool send_status(struct connection_t *, int, const char *);
extern bool send_error(struct connection_t *, int, const char *);