ARES_PARSE_NAPTR_REPLY(3) Introduction to Library Functions

NAME

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

SYNOPSIS

#include <ares.h>

int ares_parse_naptr_reply(const unsigned char* abuf, int alen,
struct ares_naptr_reply** naptr_out);

DESCRIPTION

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(3).

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;
};

RETURN VALUES

ares_parse_naptr_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.

AVAILABILITY

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

SEE ALSO

ares_query(3) ares_free_data(3)

23 February 2012 ARES_PARSE_NAPTR_REPLY(3)