domain_name.h File Reference

Look up domain names and addresses directly. More...

Go to the source code of this file.

Macros
#define	DOMAIN_NAME_MAX   256
	Maximum number of characters in a domain name or address. More...

Functions
int	domain_name_lookup (const char *name, char *addr)
	Resolve a domain name to an IP address. More...
int	domain_name_lookup_reverse (const char *addr, char *name)
	Resolve an IP address to a domain name with caching. More...

Detailed Description

Look up domain names and addresses directly.

Most applications should use domain_name_cache.h, which uses an internal cache to perform lookups quickly.

Macro Definition Documentation

#define DOMAIN_NAME_MAX   256

Maximum number of characters in a domain name or address.

Function Documentation

int domain_name_lookup	(	const char *	name,
		char *	addr
	)

Resolve a domain name to an IP address.

Parameters

name	A string containing a domain name like "www.google.com".
addr	A string where the IP address will be written.

Returns

One on success, zero on failure.

int domain_name_lookup_reverse	(	const char *	addr,
		char *	name
	)

Resolve an IP address to a domain name with caching.

Parameters

addr	A string containing an IP address like "202.5.129.1"
name	A string where the domain name will be written.

Returns

One on success, zero on failure.