mirror of https://github.com/c-ares/c-ares.git
You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
80 lines
2.3 KiB
80 lines
2.3 KiB
.\" |
|
.\" Copyright 1998 by the Massachusetts Institute of Technology. |
|
.\" |
|
.\" Permission to use, copy, modify, and distribute this |
|
.\" software and its documentation for any purpose and without |
|
.\" fee is hereby granted, provided that the above copyright |
|
.\" notice appear in all copies and that both that copyright |
|
.\" notice and this permission notice appear in supporting |
|
.\" documentation, and that the name of M.I.T. not be used in |
|
.\" advertising or publicity pertaining to distribution of the |
|
.\" software without specific, written prior permission. |
|
.\" M.I.T. makes no representations about the suitability of |
|
.\" this software for any purpose. It is provided "as is" |
|
.\" without express or implied warranty. |
|
.\" |
|
.TH ARES_PARSE_A_REPLY 3 "25 July 1998" |
|
.SH NAME |
|
ares_parse_a_reply \- Parse a reply to a DNS query of type A |
|
.SH SYNOPSIS |
|
.nf |
|
.B #include <ares.h> |
|
.PP |
|
.B int ares_parse_a_reply(const unsigned char *\fIabuf\fP, int \fIalen\fP, |
|
.B struct hostent **\fIhost\fP, |
|
.B struct ares_addrttl *\fIaddrttls\fP, int *\fInaddrttls\fP); |
|
.fi |
|
.SH DESCRIPTION |
|
The |
|
.B ares_parse_a_reply |
|
function parses the response to a query of type A into a |
|
.BR "struct hostent" |
|
and/or an array of |
|
.BR "struct ares_addrttls" . |
|
The parameters |
|
.I abuf |
|
and |
|
.I 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 |
|
.IR host , |
|
if host is nonnull. |
|
It is the caller's responsibility to free the resulting host structure |
|
using |
|
.BR ares_free_hostent (3) |
|
when it is no longer needed. |
|
.PP |
|
If |
|
.IR addrttls |
|
and |
|
.IR naddrttls |
|
are both nonnull, |
|
then up to *naddrttls |
|
.BR "struct ares_addrttl" |
|
records are stored in the array pointed to by addrttls, |
|
and then *naddrttls is set to the number of records so stored. |
|
Note that the memory for these records is supplied by the caller. |
|
.SH RETURN VALUES |
|
.B ares_parse_a_reply |
|
can return any of the following values: |
|
.TP 15 |
|
.B ARES_SUCCESS |
|
The response was successfully parsed. |
|
.TP 15 |
|
.B ARES_EBADRESP |
|
The response was malformatted. |
|
.TP 15 |
|
.B ARES_ENODATA |
|
The response did not contain an answer to the query. |
|
.TP 15 |
|
.B ARES_ENOMEM |
|
Memory was exhausted. |
|
.SH SEE ALSO |
|
.BR ares_gethostbyname (3), |
|
.BR ares_free_hostent (3) |
|
.SH AUTHOR |
|
Greg Hudson, MIT Information Systems |
|
.br |
|
Andrew Selivanov <andrew.selivanov@gmail.com> |
|
.br |
|
Copyright 1998 by the Massachusetts Institute of Technology.
|
|
|