extern void close_network_connections(void);
extern int main_loop(void);
extern void terminate_connection(struct connection_t *, bool);
-extern void flush_queue(struct node_t *);
extern bool node_read_ecdsa_public_key(struct node_t *);
extern bool read_ecdsa_public_key(struct connection_t *);
extern bool read_rsa_public_key(struct connection_t *);