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64 lines
2.0 KiB
64 lines
2.0 KiB
/* $Id$ */ |
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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 "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 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; |
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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_ETIMEOUT, 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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