/* <!-- 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 "DHTMessage.h"
#include "DHTNode.h"
#include "DHTUtil.h"

namespace aria2 {

const std::string DHTMessage::Y("y");

const std::string DHTMessage::T("t");

const std::string DHTMessage::ID("id");

DHTMessage::DHTMessage(const SharedHandle<DHTNode>& localNode,
		       const SharedHandle<DHTNode>& remoteNode,
		       const std::string& transactionID):
  _localNode(localNode), _remoteNode(remoteNode), _transactionID(transactionID)
{
  if(transactionID.empty()) {
    generateTransactionID();
  }
}

DHTMessage::~DHTMessage() {}

void DHTMessage::generateTransactionID()
{
  unsigned char tid[DHT_TRANSACTION_ID_LENGTH];
  DHTUtil::generateRandomData(tid, DHT_TRANSACTION_ID_LENGTH);
  _transactionID = std::string(&tid[0], &tid[DHT_TRANSACTION_ID_LENGTH]);
}

SharedHandle<DHTNode> DHTMessage::getLocalNode() const
{
  return _localNode;
}

SharedHandle<DHTNode> DHTMessage::getRemoteNode() const
{
  return _remoteNode;
}

} // namespace aria2