-extern int setup_listen_socket(const sockaddr_t *);
-extern int setup_vpn_in_socket(struct meshlink_handle *mesh, const sockaddr_t *);
-extern bool send_sptps_data(void *handle, uint8_t type, const char *data, size_t len);
-extern bool receive_sptps_record(void *handle, uint8_t type, const char *data, uint16_t len);
-extern void send_packet(struct node_t *, struct vpn_packet_t *);
-extern void receive_tcppacket(struct connection_t *, const char *, int);
-extern void broadcast_packet(const struct node_t *, struct vpn_packet_t *);
-extern char *get_name(struct meshlink_handle *mesh);
-extern bool setup_myself_reloadable(struct meshlink_handle *mesh);
-extern bool setup_network(struct meshlink_handle *mesh);
+extern int setup_listen_socket(const sockaddr_t *) __attribute__((__warn_unused_result__));
+extern int setup_vpn_in_socket(struct meshlink_handle *mesh, const sockaddr_t *) __attribute__((__warn_unused_result__));
+extern bool send_sptps_data(void *handle, uint8_t type, const void *data, size_t len);
+extern bool receive_sptps_record(void *handle, uint8_t type, const void *data, uint16_t len) __attribute__((__warn_unused_result__));
+extern void send_packet(struct meshlink_handle *mesh, struct node_t *, struct vpn_packet_t *);
+extern char *get_name(struct meshlink_handle *mesh) __attribute__((__warn_unused_result__));
+extern void load_all_nodes(struct meshlink_handle *mesh);
+extern bool setup_myself_reloadable(struct meshlink_handle *mesh) __attribute__((__warn_unused_result__));
+extern bool setup_network(struct meshlink_handle *mesh) __attribute__((__warn_unused_result__));
+extern void reset_outgoing(struct outgoing_t *);