45 строки
1.4 KiB
C
45 строки
1.4 KiB
C
/* Copyright 1998 by the Massachusetts Institute of Technology.
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*
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* Permission to use, copy, modify, and distribute this
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* software and its documentation for any purpose and without
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* fee is hereby granted, provided that the above copyright
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* notice appear in all copies and that both that copyright
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* notice and this permission notice appear in supporting
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* documentation, and that the name of M.I.T. not be used in
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* advertising or publicity pertaining to distribution of the
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* software without specific, written prior permission.
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* M.I.T. makes no representations about the suitability of
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* this software for any purpose. It is provided "as is"
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* without express or implied warranty.
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*/
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#include <stdlib.h>
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#include "ares.h"
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#include "ares_private.h"
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/*
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* ares_cancel() cancels a ongoing request/resolve that might be going on on
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* the given channel. It does NOT kill the channel, use ares_destroy() for
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* that.
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*/
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void ares_cancel(ares_channel channel)
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{
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struct query *query, *next;
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int i;
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for (query = channel->queries; query; query = next)
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{
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next = query->next;
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query->callback(query->arg, ARES_ETIMEOUT, NULL, 0);
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free(query->tcpbuf);
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free(query->skip_server);
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free(query);
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}
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channel->queries = NULL;
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if (!(channel->flags & ARES_FLAG_STAYOPEN))
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{
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for (i = 0; i < channel->nservers; i++)
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ares__close_sockets(&channel->servers[i]);
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}
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}
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