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trackerclient.h Example File
network/torrent/trackerclient.h

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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