ares_parse_naptr_reply - Parse a reply to a DNS query of type NAPTR

#include <ares.h>
int ares_parse_naptr_reply(const unsigned char* abuf, int alen,
struct ares_naptr_reply** naptr_out);

The ares_parse_naptr_reply function parses the response to a query of type NAPTR into a linked list of struct ares_naptr_reply The parameters abuf and alen give the contents of the response. The result is stored in allocated memory and a pointer to it stored into the variable pointed to by naptr_out. It is the caller's responsibility to free the resulting naptr_out structure when it is no longer needed using the function ares_free_data

The structure ares_naptr_reply contains the following fields:

struct ares_naptr_reply {

struct ares_naptr_reply *next;
unsigned char *flags;
unsigned char *service;
unsigned char *regexp;
char *replacement;
unsigned short order;
unsigned short preference; };

ares_parse_naptr_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.

This function was first introduced in c-ares version 1.7.6.

ares_query(3) ares_free_data(3)

Written by Jakub Hrozek <>, on behalf of Red Hat, Inc

23 February 2012