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/****************************************************************************
**
** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).
** Contact: Nokia Corporation (qt-info@nokia.com)
**
** This file is part of the examples of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE:LGPL$
** No Commercial Usage
** This file contains pre-release code and may not be distributed.
** You may use this file in accordance with the terms and conditions
** contained in the either Technology Preview License Agreement or the
** Beta Release License Agreement.
**
** GNU Lesser General Public License Usage
** Alternatively, this file may be used under the terms of the GNU Lesser
** General Public License version 2.1 as published by the Free Software
** Foundation and appearing in the file LICENSE.LGPL included in the
** packaging of this file.  Please review the following information to
** ensure the GNU Lesser General Public License version 2.1 requirements
** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
**
** In addition, as a special exception, Nokia gives you certain
** additional rights. These rights are described in the Nokia Qt LGPL
** Exception version 1.0, included in the file LGPL_EXCEPTION.txt in this
** package.
**
** GNU General Public License Usage
** Alternatively, this file may be used under the terms of the GNU
** General Public License version 3.0 as published by the Free Software
** Foundation and appearing in the file LICENSE.GPL included in the
** packaging of this file.  Please review the following information to
** ensure the GNU General Public License version 3.0 requirements will be
** met: http://www.gnu.org/copyleft/gpl.html.
**
** If you are unsure which license is appropriate for your use, please
** contact the sales department at http://www.qtsoftware.com/contact.
** $QT_END_LICENSE$
**
****************************************************************************/

#ifndef TRACKERCLIENT_H
#define TRACKERCLIENT_H

#include <QByteArray>
#include <QList>
#include <QObject>
#include <QHostAddress>
#include <QHttp>

#include "metainfo.h"
#include "torrentclient.h"

class TorrentClient;

class TrackerClient : public QObject
{
    Q_OBJECT

public:
    TrackerClient(TorrentClient *downloader, QObject *parent = 0);

    void start(const MetaInfo &info);
    void stop();
    void startSeeding();

signals:
    void connectionError(QHttp::Error error);

    void failure(const QString &reason);
    void warning(const QString &message);
    void peerListUpdated(const QList<TorrentPeer> &peerList);

    void uploadCountUpdated(qint64 newUploadCount);
    void downloadCountUpdated(qint64 newDownloadCount);
    
    void stopped();

protected:
    void timerEvent(QTimerEvent *event);

private slots:
    void fetchPeerList();
    void httpRequestDone(bool error);

private:
    TorrentClient *torrentDownloader;

    int requestInterval;
    int requestIntervalTimer;
    QHttp http;
    MetaInfo metaInfo;
    QByteArray trackerId;
    QList<TorrentPeer> peers;
    qint64 uploadedBytes;
    qint64 downloadedBytes;
    qint64 length;
    
    bool firstTrackerRequest;
    bool lastTrackerRequest;
    bool firstSeeding;
};

#endif