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+/****************************************************************************
+**
+** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).
+** Contact: Qt Software Information (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 qt-sales@nokia.com.
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#ifndef RATECONTROLLER_H
+#define RATECONTROLLER_H
+
+#include <QObject>
+#include <QSet>
+#include <QTime>
+
+class PeerWireClient;
+
+class RateController : public QObject
+{
+    Q_OBJECT
+
+public:
+    inline RateController(QObject *parent = 0)
+        : QObject(parent), transferScheduled(false) { }
+    static RateController *instance();
+
+    void addSocket(PeerWireClient *socket);
+    void removeSocket(PeerWireClient *socket);
+
+    inline int uploadLimit() const { return upLimit; }
+    inline int downloadLimit() const { return downLimit; }
+    inline void setUploadLimit(int bytesPerSecond) { upLimit = bytesPerSecond; }
+    void setDownloadLimit(int bytesPerSecond);
+
+public slots:
+    void transfer();
+    void scheduleTransfer();
+
+private:
+    QTime stopWatch;
+    QSet<PeerWireClient *> sockets;
+    int upLimit;
+    int downLimit;
+    bool transferScheduled;
+};
+
+#endif