trackerclient.h Example File

network/torrent/trackerclient.h
 /****************************************************************************
 **
 ** Copyright (C) 2015 The Qt Company Ltd.
 ** Contact: http://www.qt.io/licensing/
 **
 ** 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 The Qt Company Ltd nor the names of its
 **     contributors may be used to endorse or promote products derived
 **     from this software without specific prior written permission.
 **
 **
 ** THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
 ** "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
 ** LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
 ** A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
 ** OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
 ** SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
 ** LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
 ** DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
 ** THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 ** (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
 ** OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE."
 **
 ** $QT_END_LICENSE$
 **
 ****************************************************************************/

 #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