+void host_cleanup PARAMS ((void));
+
+void wget_sockaddr_set_address PARAMS((wget_sockaddr *, int,
+ unsigned short, ip_address *));
+void wget_sockaddr_set_port PARAMS((wget_sockaddr *, unsigned short));
+void *wget_sockaddr_get_addr PARAMS((wget_sockaddr *));
+unsigned short wget_sockaddr_get_port PARAMS((const wget_sockaddr *));
+int sockaddr_len PARAMS(());
+void map_ipv4_to_ip PARAMS((ip4_address *, ip_address *));
+int map_ip_to_ipv4 PARAMS((ip_address *, ip4_address *));
+
+extern int ip_default_family; /* defined in host.c */
+