ares_parse_ptr_reply - Parse a reply to a DNS query of type PTR into a hostent


#include <ares.h>

int ares_parse_ptr_reply(const unsigned char *abuf, int alen, const void *addr, int addrlen, int family, struct hostent **host);


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.


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.


ares_gethostbyaddr (3) ares_free_hostent (3)


Greg Hudson, MIT Information Systems

Copyright 1998 by the Massachusetts Institute of Technology.

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