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deps/cares/docs/ares_parse_a_reply.3
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Node.js GitHub Bot
deps: update c-ares to 1.29.0
02 июн 2024, 08:30
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02 июн 2024, 08:30
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.\" .\" Copyright 1998 by the Massachusetts Institute of Technology. .\" SPDX-License-Identifier: MIT .\" .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 #include <ares.h> int ares_parse_a_reply(const unsigned char *\fIabuf\fP, int \fIalen\fP, struct hostent **\fIhost\fP, 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)