Manpages - ares_parse_mx_reply.3

ares_parse_mx_reply - Parse a reply to a DNS query of type MX

  #include <ares.h>

  int ares_parse_mx_reply(const unsigned char* abuf, int alen,
  struct ares_mx_reply** mx_out);

The ares_parse_mx_reply function parses the response to a query of type MX into a linked list of struct ares_mx_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 mx_out. It is the caller’s responsibility to free the resulting mx_out structure when it is no longer needed using the function ares_free_data

The structure ares_mx_reply contains the following fields:

  struct ares_mx_reply {
      struct ares_mx_reply *next;
      char *host;
      unsigned short priority;
  };

ares_parse_mx_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.

This function was first introduced in c-ares version 1.7.2.

*ares_query*(3) *ares_free_data*(3)

Written by Jeremy Lal <kapouer@melix.org>