netdb.h File Reference

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Data Structures
struct	hostent

Macros
#define	NETDB_INTERNAL   -1 /* see errno */
#define	NETDB_SUCCESS   0 /* no problem */
#define	HOST_NOT_FOUND   1 /* Authoritative Answer Host not found */
#define	TRY_AGAIN   2 /* Non-Authoritative Host not found, or SERVERFAIL */
#define	NO_RECOVERY   3 /* Non recoverable errors, FORMERR, REFUSED, NOTIMP */
#define	NO_DATA   4 /* Valid name, no data record of requested type */
#define	NO_ADDRESS   NO_DATA /* no address, look for MX record */

Functions
struct hostent *	gethostbyaddr (const void *addr, int len, int type)
struct hostent *	gethostbyname (const char *name)

Variables
int	h_errno

Macro Definition Documentation

HOST_NOT_FOUND

#define HOST_NOT_FOUND   1 /* Authoritative Answer Host not found */

NETDB_INTERNAL

#define NETDB_INTERNAL   -1 /* see errno */

NETDB_SUCCESS

#define NETDB_SUCCESS   0 /* no problem */

NO_ADDRESS

#define NO_ADDRESS   NO_DATA /* no address, look for MX record */

NO_DATA

#define NO_DATA   4 /* Valid name, no data record of requested type */

NO_RECOVERY

#define NO_RECOVERY   3 /* Non recoverable errors, FORMERR, REFUSED, NOTIMP */

TRY_AGAIN

#define TRY_AGAIN   2 /* Non-Authoritative Host not found, or SERVERFAIL */

Function Documentation

gethostbyaddr()

struct hostent * gethostbyaddr	(	const void *	addr,
		int	len,
		int	type )

gethostbyname()

struct hostent * gethostbyname

(

const char *

name

)

Variable Documentation

h_errno

int h_errno

extern