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