int domain_name_cache_canonical(const char *name_or_addr, char *cname)
Find the canonical name of a host.
int domain_name_cache_lookup(const char *name, char *addr)
Resolve a domain name to an IP address with caching.
int domain_name_cache_lookup_reverse(const char *addr, char *name)
Resolve an IP address to a domain name with caching.
int domain_name_cache_guess(char *name)
Determine the caller's primary domain name.
int domain_name_cache_guess_short(char *name)
Determine the caller's local machine name.
Look up domain names and addresses directly.