+extern listen_socket_t listen_socket[MAXSOCKETS];
+extern int listen_sockets;
+extern int keyexpires;
+extern int keylifetime;
+extern int do_prune;
+extern int do_purge;
+extern char *myport;
+extern time_t now;
+
+extern void retry_outgoing(outgoing_t *);
+extern void handle_incoming_vpn_data(int);
+extern void finish_connecting(connection_t *);
+extern void do_outgoing_connection(connection_t *);
+extern int handle_new_meta_connection(int);
+extern int setup_listen_socket(sockaddr_t *);
+extern int setup_vpn_in_socket(sockaddr_t *);