Qt 4.8: trackerclient.h Example File (network/torrent/trackerclient.h)

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# trackerclient.h Example File

network/torrent/trackerclient.h

     /****************************************************************************
     **
     ** Copyright (C) 2014 Digia Plc and/or its subsidiary(-ies).
     ** Contact: http://www.qt-project.org/legal
     **
     ** This file is part of the examples of the Qt Toolkit.
     **
     ** $QT_BEGIN_LICENSE:BSD$
     ** You may use this file under the terms of the BSD license as follows:
     **
     ** "Redistribution and use in source and binary forms, with or without
     ** modification, are permitted provided that the following conditions are
     ** met:
     **   * Redistributions of source code must retain the above copyright
     **     notice, this list of conditions and the following disclaimer.
     **   * Redistributions in binary form must reproduce the above copyright
     **     notice, this list of conditions and the following disclaimer in
     **     the documentation and/or other materials provided with the
     **     distribution.
     **   * Neither the name of Digia Plc and its Subsidiary(-ies) nor the names
     **     of its contributors may be used to endorse or promote products derived
     **     from this software without specific prior written permission.
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     ** THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
     ** "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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     #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