extern void retry_outgoing(outgoing_t *);
extern void handle_incoming_vpn_data(int, short, void *);
extern void finish_connecting(struct connection_t *);
extern void retry_outgoing(outgoing_t *);
extern void handle_incoming_vpn_data(int, short, void *);
extern void finish_connecting(struct connection_t *);
extern void handle_new_meta_connection(int, short, void *);
extern int setup_listen_socket(const sockaddr_t *);
extern int setup_vpn_in_socket(const sockaddr_t *);
extern void handle_new_meta_connection(int, short, void *);
extern int setup_listen_socket(const sockaddr_t *);
extern int setup_vpn_in_socket(const sockaddr_t *);
-extern void send_packet(const struct node_t *, vpn_packet_t *);
-extern void receive_tcppacket(struct connection_t *, char *, int);
+extern void send_packet(struct node_t *, vpn_packet_t *);
+extern void receive_tcppacket(struct connection_t *, const char *, int);
extern void broadcast_packet(const struct node_t *, vpn_packet_t *);
extern bool setup_network(void);
extern void setup_outgoing_connection(struct outgoing_t *);
extern void broadcast_packet(const struct node_t *, vpn_packet_t *);
extern bool setup_network(void);
extern void setup_outgoing_connection(struct outgoing_t *);
extern void send_mtu_probe(struct node_t *);
extern void handle_device_data(int, short, void *);
extern void handle_meta_connection_data(int, short, void *);
extern void send_mtu_probe(struct node_t *);
extern void handle_device_data(int, short, void *);
extern void handle_meta_connection_data(int, short, void *);