ares_parse_ptr_reply - Man Page

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.

Return Values

ares_parse_ptr_reply can return any of the following values:


The response was successfully parsed.


The response was malformatted.


The response did not contain an answer to the query.


Memory was exhausted.

See Also

ares_gethostbyaddr(3), ares_free_hostent(3)


Greg Hudson, MIT Information Systems
Copyright 1998 by the Massachusetts Institute of Technology.

Referenced By


25 July 1998