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Branched from the monolithic repo, Qt master branch, at commit
896db169ea224deb96c59ce8af800d019de63f12

1 files changed, 204 insertions, 0 deletions

diff --git a/examples/network/torrent/torrentclient.h b/examples/network/torrent/torrentclient.h
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+++ b/examples/network/torrent/torrentclient.h
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+/****************************************************************************
+**
+** Copyright (C) 2011 Nokia Corporation and/or its subsidiary(-ies).
+** All rights reserved.
+** Contact: Nokia Corporation (qt-info@nokia.com)
+**
+** 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 Nokia Corporation 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.
+**
+** 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 TORRENTCLIENT_H
+#define TORRENTCLIENT_H
+
+#include <QBitArray>
+#include <QHostAddress>
+#include <QList>
+
+class MetaInfo;
+class PeerWireClient;
+class TorrentClientPrivate;
+class TorrentPeer;
+class TorrentPiece;
+QT_BEGIN_NAMESPACE
+class QTimerEvent;
+QT_END_NAMESPACE
+
+class TorrentPeer {
+public:
+    QHostAddress address;
+    quint16 port;
+    QString id;
+    bool interesting;
+    bool seed;
+    uint lastVisited;
+    uint connectStart;
+    uint connectTime;
+    QBitArray pieces;
+    int numCompletedPieces;
+
+    inline bool operator==(const TorrentPeer &other)
+    {
+        return port == other.port
+            && address == other.address
+            && id == other.id;
+    }
+};
+
+class TorrentClient : public QObject
+{
+    Q_OBJECT
+
+public:
+    enum State {
+        Idle,
+        Paused,
+        Stopping,
+        Preparing,
+        Searching,
+        Connecting,
+        WarmingUp,
+        Downloading,
+        Endgame,
+        Seeding
+    };
+    enum Error {
+        UnknownError,
+        TorrentParseError,
+        InvalidTrackerError,
+        FileError,
+        ServerError
+    };
+
+    TorrentClient(QObject *parent = 0);
+    ~TorrentClient();
+
+    bool setTorrent(const QString &fileName);
+    bool setTorrent(const QByteArray &torrentData);
+    MetaInfo metaInfo() const;
+
+    void setMaxConnections(int connections);
+    int maxConnections() const;
+
+    void setDestinationFolder(const QString &directory);
+    QString destinationFolder() const;
+
+    void setDumpedState(const QByteArray &dumpedState);
+    QByteArray dumpedState() const;
+
+    // Progress and stats for download feedback.
+    qint64 progress() const;
+    void setDownloadedBytes(qint64 bytes);
+    qint64 downloadedBytes() const;
+    void setUploadedBytes(qint64 bytes);
+    qint64 uploadedBytes() const;
+    int connectedPeerCount() const;
+    int seedCount() const;
+   
+    // Accessors for the tracker
+    QByteArray peerId() const;
+    QByteArray infoHash() const;
+    quint16 serverPort() const;
+
+    // State and error.
+    State state() const;
+    QString stateString() const;
+    Error error() const;
+    QString errorString() const;
+
+signals:
+    void stateChanged(TorrentClient::State state);
+    void error(TorrentClient::Error error);
+
+    void downloadCompleted();
+    void peerInfoUpdated();
+    
+    void dataSent(int uploadedBytes);
+    void dataReceived(int downloadedBytes);
+    void progressUpdated(int percentProgress);
+    void downloadRateUpdated(int bytesPerSecond);
+    void uploadRateUpdated(int bytesPerSecond);
+
+    void stopped();
+
+public slots:
+    void start();
+    void stop();
+    void setPaused(bool paused);
+    void setupIncomingConnection(PeerWireClient *client);
+
+protected slots:
+    void timerEvent(QTimerEvent *event);
+
+private slots:
+    // File management
+    void sendToPeer(int readId, int pieceIndex, int begin, const QByteArray &data);
+    void fullVerificationDone();
+    void pieceVerified(int pieceIndex, bool ok);
+    void handleFileError();
+
+    // Connection handling
+    void connectToPeers();
+    QList<TorrentPeer *> weighedFreePeers() const;
+    void setupOutgoingConnection();
+    void initializeConnection(PeerWireClient *client);
+    void removeClient();
+    void peerPiecesAvailable(const QBitArray &pieces);
+    void peerRequestsBlock(int pieceIndex, int begin, int length);
+    void blockReceived(int pieceIndex, int begin, const QByteArray &data);
+    void peerWireBytesWritten(qint64 bytes);
+    void peerWireBytesReceived(qint64 bytes);
+    int blocksLeftForPiece(const TorrentPiece *piece) const;
+
+    // Scheduling
+    void scheduleUploads();
+    void scheduleDownloads();
+    void schedulePieceForClient(PeerWireClient *client);
+    void requestMore(PeerWireClient *client);
+    int requestBlocks(PeerWireClient *client, TorrentPiece *piece, int maxBlocks);
+    void peerChoked();
+    void peerUnchoked();
+
+    // Tracker handling
+    void addToPeerList(const QList<TorrentPeer> &peerList);
+    void trackerStopped();
+
+    // Progress
+    void updateProgress(int progress = -1);
+
+private:
+    TorrentClientPrivate *d;
+    friend class TorrentClientPrivate;
+};
+
+#endif