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63 lines
2.0 KiB
63 lines
2.0 KiB
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/* Copyright (C) 2004 by Daniel Stenberg et al
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*
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* Permission to use, copy, modify, and distribute this software and its
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* documentation for any purpose and without fee is hereby granted, provided
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* that the above copyright notice appear in all copies and that both that
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* copyright 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 advertising or
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* publicity pertaining to distribution of the software without specific,
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* written prior permission. M.I.T. makes no representations about the
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* suitability of 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 "ares_setup.h"
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#include <assert.h>
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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 all ongoing requests/resolves that might be going on
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* on 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;
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struct list_node* list_head;
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struct list_node* list_node;
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int i;
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list_head = &(channel->all_queries);
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for (list_node = list_head->next; list_node != list_head; )
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{
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query = list_node->data;
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list_node = list_node->next; /* since we're deleting the query */
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query->callback(query->arg, ARES_ECANCELLED, 0, NULL, 0);
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ares__free_query(query);
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}
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#ifndef NDEBUG
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/* Freeing the query should remove it from all the lists in which it sits,
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* so all query lists should be empty now.
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*/
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assert(ares__is_list_empty(&(channel->all_queries)));
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for (i = 0; i < ARES_QID_TABLE_SIZE; i++)
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{
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assert(ares__is_list_empty(&(channel->queries_by_qid[i])));
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}
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for (i = 0; i < ARES_TIMEOUT_TABLE_SIZE; i++)
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{
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assert(ares__is_list_empty(&(channel->queries_by_timeout[i])));
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}
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#endif
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if (!(channel->flags & ARES_FLAG_STAYOPEN))
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{
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if (channel->servers)
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{
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for (i = 0; i < channel->nservers; i++)
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ares__close_sockets(channel, &channel->servers[i]);
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}
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}
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}
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