+extern void init_requests(void);
+extern void exit_requests(void);
+extern int seen_request(char *);
+extern void age_past_requests(void);
+
+/* Requests */
+
+extern int send_id(connection_t *);
+extern int send_metakey(connection_t *);
+extern int send_challenge(connection_t *);
+extern int send_chal_reply(connection_t *);
+extern int send_ack(connection_t *);
+extern int send_status(connection_t *, int, char *);
+extern int send_error(connection_t *, int, char *);
+extern int send_termreq(connection_t *);
+extern int send_ping(connection_t *);
+extern int send_pong(connection_t *);
+// extern int send_add_node(connection_t *, node_t *);
+// extern int send_del_node(connection_t *, node_t *);
+extern int send_add_subnet(connection_t *, subnet_t *);
+extern int send_del_subnet(connection_t *, subnet_t *);
+extern int send_add_edge(connection_t *, edge_t *);
+extern int send_del_edge(connection_t *, edge_t *);
+extern int send_key_changed(connection_t *, node_t *);
+extern int send_req_key(connection_t *, node_t *, node_t *);
+extern int send_ans_key(connection_t *, node_t *, node_t *);
+extern int send_tcppacket(connection_t *, vpn_packet_t *);
+
+/* Request handlers */
+
+extern int (*request_handlers[])(connection_t *);
+
+extern int id_h(connection_t *);
+extern int metakey_h(connection_t *);
+extern int challenge_h(connection_t *);
+extern int chal_reply_h(connection_t *);
+extern int ack_h(connection_t *);
+extern int status_h(connection_t *);
+extern int error_h(connection_t *);
+extern int termreq_h(connection_t *);
+extern int ping_h(connection_t *);
+extern int pong_h(connection_t *);
+// extern int add_node_h(connection_t *);
+// extern int del_node_h(connection_t *);
+extern int add_subnet_h(connection_t *);
+extern int del_subnet_h(connection_t *);
+extern int add_edge_h(connection_t *);
+extern int del_edge_h(connection_t *);
+extern int key_changed_h(connection_t *);
+extern int req_key_h(connection_t *);
+extern int ans_key_h(connection_t *);
+extern int tcppacket_h(connection_t *);
+