/****************************************************************************
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** Copyright (C) 2013 Digia Plc and/or its subsidiary(-ies).
** Contact: http://www.qt-project.org/legal
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** This file is part of the QtNetwork module of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE:LGPL$
** Commercial License Usage
** Licensees holding valid commercial Qt licenses may use this file in
** accordance with the commercial license agreement provided with the
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** use the contact form at http://qt.digia.com/contact-us.
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** 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
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** 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
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****************************************************************************/

#ifndef QUDPSOCKET_H
#define QUDPSOCKET_H

#include <QtNetwork/qabstractsocket.h>
#include <QtNetwork/qhostaddress.h>

QT_BEGIN_NAMESPACE


#ifndef QT_NO_UDPSOCKET

class QNetworkInterface;
class QUdpSocketPrivate;

class Q_NETWORK_EXPORT QUdpSocket : public QAbstractSocket
{
    Q_OBJECT
public:
    explicit QUdpSocket(QObject *parent = 0);
    virtual ~QUdpSocket();

#ifndef QT_NO_NETWORKINTERFACE
    bool joinMulticastGroup(const QHostAddress &groupAddress);
    bool joinMulticastGroup(const QHostAddress &groupAddress,
                            const QNetworkInterface &iface);
    bool leaveMulticastGroup(const QHostAddress &groupAddress);
    bool leaveMulticastGroup(const QHostAddress &groupAddress,
                             const QNetworkInterface &iface);

    QNetworkInterface multicastInterface() const;
    void setMulticastInterface(const QNetworkInterface &iface);
#endif

    bool hasPendingDatagrams() const;
    qint64 pendingDatagramSize() const;
    qint64 readDatagram(char *data, qint64 maxlen, QHostAddress *host = 0, quint16 *port = 0);
    qint64 writeDatagram(const char *data, qint64 len, const QHostAddress &host, quint16 port);
    inline qint64 writeDatagram(const QByteArray &datagram, const QHostAddress &host, quint16 port)
        { return writeDatagram(datagram.constData(), datagram.size(), host, port); }

private:
    Q_DISABLE_COPY(QUdpSocket)
    Q_DECLARE_PRIVATE(QUdpSocket)
};

#endif // QT_NO_UDPSOCKET

QT_END_NAMESPACE

#endif // QUDPSOCKET_H