extern bool send_challenge(struct connection_t *);
extern bool send_chal_reply(struct connection_t *);
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_termreq(struct connection_t *);
extern bool send_ping(struct connection_t *);
extern bool send_pong(struct connection_t *);
extern bool send_add_subnet(struct connection_t *, const struct subnet_t *);