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,
struct hostent **host);
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.