ARES_PARSE_PTR_REPLY
Section: C Library Functions (3)
Updated: 25 July 1998
Page Index
NAME
ares_parse_ptr_reply - Parse a reply to a DNS query of type PTR into a hostent
SYNOPSIS
#include <ares.h>
int ares_parse_ptr_reply(const unsigned char *abuf, int alen,
const void *addr, int addrlen, int family,
DESCRIPTION
The
ares_parse_ptr_reply
function parses the response to a query of type PTR into a
struct hostent.
The parameters
abuf
and
alen
give the contents of the response. The parameters
addr,
addrlen,
and
family
specify which address was queried for; they are not used to verify the
response, merely used to fill in the address of the
struct hostent.
The resulting
struct hostent
is stored in allocated memory and a pointer to it stored into the
variable pointed to by
host.
It is the caller's responsibility to free the resulting host structure
using
ares_free_hostent(3)
when it is no longer needed.
RETURN VALUES
ares_parse_ptr_reply
can return any of the following values:
- ARES_SUCCESS
-
The response was successfully parsed.
- ARES_EBADRESP
-
The response was malformatted.
- ARES_ENODATA
-
The response did not contain an answer to the query.
- ARES_ENOMEM
-
Memory was exhausted.
SEE ALSO
ares_gethostbyaddr(3),
ares_free_hostent(3)
AUTHOR
Greg Hudson, MIT Information Systems
Copyright 1998 by the Massachusetts Institute of Technology.