mirror of https://github.com/aria2/aria2
98 lines
3.3 KiB
C++
98 lines
3.3 KiB
C++
/* <!-- copyright */
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/*
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* aria2 - The high speed download utility
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*
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* Copyright (C) 2006 Tatsuhiro Tsujikawa
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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*
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* In addition, as a special exception, the copyright holders give
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* permission to link the code of portions of this program with the
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* OpenSSL library under certain conditions as described in each
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* individual source file, and distribute linked combinations
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* including the two.
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* You must obey the GNU General Public License in all respects
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* for all of the code used other than OpenSSL. If you modify
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* file(s) with this exception, you may extend this exception to your
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* version of the file(s), but you are not obligated to do so. If you
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* do not wish to do so, delete this exception statement from your
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* version. If you delete this exception statement from all source
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* files in the program, then also delete it here.
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*/
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/* copyright --> */
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#include "DHTReplaceNodeTask.h"
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#include "DHTBucket.h"
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#include "DHTNode.h"
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#include "DHTMessage.h"
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#include "DHTMessageFactory.h"
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#include "DHTMessageDispatcher.h"
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#include "DHTMessageCallbackImpl.h"
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#include "Logger.h"
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namespace aria2 {
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DHTReplaceNodeTask::DHTReplaceNodeTask(const SharedHandle<DHTBucket>& bucket,
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const SharedHandle<DHTNode>& newNode):
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_bucket(bucket),
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_newNode(newNode),
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_numRetry(0),
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_timeout(DHT_MESSAGE_TIMEOUT)
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{}
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DHTReplaceNodeTask::~DHTReplaceNodeTask() {}
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void DHTReplaceNodeTask::startup()
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{
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sendMessage();
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}
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void DHTReplaceNodeTask::sendMessage()
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{
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SharedHandle<DHTNode> questionableNode = _bucket->getLRUQuestionableNode();
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if(questionableNode.isNull()) {
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_finished = true;
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} else {
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SharedHandle<DHTMessage> m = _factory->createPingMessage(questionableNode);
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WeakHandle<DHTMessageCallbackListener> listener(this);
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SharedHandle<DHTMessageCallback> callback(new DHTMessageCallbackImpl(listener));
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_dispatcher->addMessageToQueue(m, _timeout, callback);
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}
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}
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void DHTReplaceNodeTask::onReceived(const SharedHandle<DHTMessage>& message)
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{
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_logger->info("ReplaceNode: Ping reply received from %s.",
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message->getRemoteNode()->toString().c_str());
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_finished = true;
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}
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void DHTReplaceNodeTask::onTimeout(const SharedHandle<DHTNode>& node)
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{
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++_numRetry;
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if(_numRetry >= MAX_RETRY) {
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_logger->info("ReplaceNode: Ping failed %u times. Replace %s with %s.",
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_numRetry, node->toString().c_str(), _newNode->toString().c_str());
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node->markBad();
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_bucket->addNode(_newNode);
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_finished = true;
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} else {
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_logger->info("ReplaceNode: Ping reply timeout from %s. Try once more.",
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node->toString().c_str());
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sendMessage();
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}
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}
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} // namespace aria2
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