NE_ADDR_RESOLVE(3)						neon API reference						NE_ADDR_RESOLVE(3)

NAME

       ne_addr_resolve, ne_addr_result, ne_addr_first, ne_addr_next, ne_addr_error, ne_addr_destroy - functions to resolve hostnames to addresses

SYNOPSIS

       #include <ne_socket.h>

       ne_sock_addr *ne_addr_resolve (const char *hostname, int flags);

       int ne_addr_result (const ne_sock_addr *addr);

       const ne_inet_addr *ne_addr_first (ne_sock_addr *addr);

       const ne_inet_addr *ne_addr_next (ne_sock_addr *addr);

       char *ne_addr_error (const ne_sock_addr *addr, char *buffer, size_t bufsiz);

       void ne_addr_destroy (ne_sock_addr *addr);

DESCRIPTION

       The  ne_addr_resolve function resolves the given hostname, returning an ne_sock_addr object representing the address (or addresses) associ-
       ated with the hostname. The flags parameter is currently unused, and must be passed as 0.

       The hostname passed to ne_addr_resolve can be a DNS hostname (e.g. "www.example.com") or an IPv4 dotted quad (e.g. "192.0.34.72");  or,	on
       systems which support IPv6, an IPv6 hex address, which may be enclosed in brackets, e.g. "[::1]".

       To  determine  whether  the hostname was successfully resolved, the ne_addr_result function is used, which returns non-zero if an error oc-
       curred. If an error did occur, the ne_addr_error function can be used, which will copy the error string into a given buffer (of	size  buf-
       siz).

       The  functions  ne_addr_first and ne_addr_next are used to retrieve the Internet addresses associated with an address object which has been
       successfully resolved. ne_addr_first returns the first address; ne_addr_next returns the next address after the most recent call to  ne_ad-
       dr_next	or  ne_addr_first,  or	NULL if there are no more addresses. The ne_inet_addr pointer returned by these functions can be passed to
       ne_sock_connect to connect a socket.

       After the address object has been used, it should be destroyed using ne_addr_destroy.

RETURN VALUE

       ne_addr_resolve returns a pointer to an address object, and never NULL. ne_addr_error returns the buffer parameter .

EXAMPLES

       The code below prints out the set of addresses associated with the hostname www.google.com.

       ne_sock_addr *addr;
       char buf[256];

       addr = ne_addr_resolve("www.google.com", 0);
       if (ne_addr_result(addr)) {
	   printf("Could not resolve www.google.com: %s
",
		  ne_addr_error(addr, buf, sizeof buf));
       } else {
	   const ne_inet_addr *ia;
	   printf("www.google.com:");
	   for (ia = ne_addr_first(addr); ia != NULL; ia = ne_addr_next(addr)) {
	       printf(" %s", ne_iaddr_print(ia, buf, sizeof buf));
	   }
	   putchar('
');
       }
       ne_addr_destroy(addr);

SEE ALSO

       ne_iaddr_print(3)

AUTHOR

       Joe Orton <neon@webdav.org>.

ATTRIBUTES

       See attributes(5) for descriptions of the following attributes:

       +--------------------+-----------------+
       |  ATTRIBUTE TYPE    | ATTRIBUTE VALUE |
       +--------------------+-----------------+
       |Availability	    | SUNWneon	      |
       +--------------------+-----------------+
       |Interface Stability | Volatile	      |
       +--------------------+-----------------+
NOTES

       Source for Neon is available on http://opensolaris.org.

ATTRIBUTES

       See attributes(5) for descriptions of the following attributes:

       +--------------------+-----------------+
       |  ATTRIBUTE TYPE    | ATTRIBUTE VALUE |
       +--------------------+-----------------+
       |Availability	    | SUNWneon	      |
       +--------------------+-----------------+
       |Interface Stability | Volatile	      |
       +--------------------+-----------------+
NOTES

       Source for Neon is available on http://opensolaris.org.

neon 0.25.5							  20 January 2006						NE_ADDR_RESOLVE(3)