+char * host_ntop(const struct sockaddr *sap,
+ char *buf, const size_t buflen);
+__attribute_malloc__
+struct addrinfo * host_pton(const char *paddr);
+__attribute_malloc__
+struct addrinfo * host_addrinfo(const char *hostname);
+__attribute_malloc__
+char * host_canonname(const struct sockaddr *sap);
+__attribute_malloc__
+struct addrinfo * host_reliable_addrinfo(const struct sockaddr *sap);
+__attribute_malloc__
+struct addrinfo * host_numeric_addrinfo(const struct sockaddr *sap);
+