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/****************************************************************************
**
** Copyright (C) 2012 Nokia Corporation and/or its subsidiary(-ies).
** Contact: http://www.qt-project.org/
**
** This file is part of the test suite of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE:LGPL$
** GNU Lesser General Public License Usage
** 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 1.1, 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.
**
** Other Usage
** Alternatively, this file may be used in accordance with the terms and
** conditions contained in a signed written agreement between you and Nokia.
**
**
**
**
**
**
** $QT_END_LICENSE$
**
****************************************************************************/
#include <QtNetwork>

class Server : public QObject
{
    Q_OBJECT
public:
    Server(int port)
    {
        connect(&serverSocket, SIGNAL(readyRead()),
                this, SLOT(sendEcho()));
        if (serverSocket.bind(QHostAddress::Any, port,
                              QUdpSocket::ReuseAddressHint
                              | QUdpSocket::ShareAddress)) {
            printf("OK\n");
        } else {
            printf("FAILED\n");
        }
        fflush(stdout);
    }

private slots:
    void sendEcho()
    {
        QHostAddress senderAddress;
        quint16 senderPort;

        char data[1024];
        qint64 bytes = serverSocket.readDatagram(data, sizeof(data), &senderAddress, &senderPort);
        if (bytes == 1 && data[0] == '\0')
            QCoreApplication::instance()->quit();
        
        for (int i = 0; i < bytes; ++i)
            data[i] += 1;
        serverSocket.writeDatagram(data, bytes, senderAddress, senderPort);        
    }

private:
    QUdpSocket serverSocket;
};

int main(int argc, char **argv)
{
    QCoreApplication app(argc, argv);

    Server server(app.arguments().at(1).toInt());
    
    return app.exec();
}

#include "main.moc"