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# connectionmanager.cpp Example File
network/torrent/connectionmanager.cpp

        /****************************************************************************
        **
        ** Copyright (C) 2004-2006 Trolltech ASA. All rights reserved.
        **
        ** This file is part of the example classes of the Qt Toolkit.
        **
        ** Licensees holding valid Qt Preview licenses may use this file in
        ** accordance with the Qt Preview License Agreement provided with the
        ** Software.
        **
        ** See http://www.trolltech.com/pricing.html or email sales@trolltech.com for
        ** information about Qt Commercial License Agreements.
        **
        ** Contact info@trolltech.com if any conditions of this licensing are
        ** not clear to you.
        **
        ** This file is provided AS IS with NO WARRANTY OF ANY KIND, INCLUDING THE
        ** WARRANTY OF DESIGN, MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
        **
        ****************************************************************************/

        #include "connectionmanager.h"

        #include <QByteArray>
        #include <QDateTime>

        static const int MaxConnections = 250;

        Q_GLOBAL_STATIC(ConnectionManager, connectionManager)

        ConnectionManager *ConnectionManager::instance()
        {
            return connectionManager();
        }

        bool ConnectionManager::canAddConnection() const
        {
            return (connections.size() < MaxConnections);
        }

        void ConnectionManager::addConnection(PeerWireClient *client)
        {
            connections << client;
        }

        void ConnectionManager::removeConnection(PeerWireClient *client)
        {
            connections.remove(client);
        }

        int ConnectionManager::maxConnections() const
        {
            return MaxConnections;
        }

        QByteArray ConnectionManager::clientId() const
        {
            if (id.isEmpty()) {
                // Generate peer id
                int startupTime = int(QDateTime::currentDateTime().toTime_t());

                QString s;
                s.sprintf("-QT%06x", QT_VERSION);
                id += s.toLatin1();
                id += QByteArray::number(startupTime, 16);
                id += QByteArray(20 - id.size(), '-');
            }
            return id;
        }