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<td align="right" valign="center"><img src="logo32.png" align="right" width="64" height="32" border="0"></td></tr></table><h1 align=center>qdns.h</h1>

<p>This is the verbatim text of the qdns.h include file. It is provided only for illustration; the copyright remains with Trolltech.
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/****************************************************************************
** $Id: qt/qdns.h   3.3.8   edited Jan 11 14:46 $
**
** Definition of QDns class.
**
** Created : 991122
**
** Copyright (C) 1999-2007 Trolltech ASA.  All rights reserved.
**
** This file is part of the network module of the Qt GUI Toolkit.
**
** This file may be used under the terms of the GNU General Public
** License versions 2.0 or 3.0 as published by the Free Software
** Foundation and appearing in the file LICENSE.GPL included in the
** packaging of this file. Alternatively you may (at your option) use any
** later version of the GNU General Public License if such license has
** been publicly approved by Trolltech ASA (or its successors, if any)
** and the KDE Free Qt Foundation.
**
** Please review the following information to ensure GNU General
** Public Licensing requirements will be met:
** http://trolltech.com/products/qt/licenses/licensing/opensource/.
** If you are unsure which license is appropriate for your use, please
** review the following information:
** http://trolltech.com/products/qt/licenses/licensing/licensingoverview
** or contact the sales department at sales@trolltech.com.
**
** This file may be used under the terms of the Q Public License as
** defined by Trolltech ASA and appearing in the file LICENSE.QPL
** included in the packaging of this file.  Licensees holding valid Qt
** Commercial licenses may use this file in accordance with the Qt
** Commercial License Agreement provided with the Software.
**
** This file is provided "AS IS" with NO WARRANTY OF ANY KIND,
** INCLUDING THE WARRANTIES OF DESIGN, MERCHANTABILITY AND FITNESS FOR
** A PARTICULAR PURPOSE. Trolltech reserves all rights not granted
** herein.
**
**********************************************************************/

#ifndef QDNS_H
#define QDNS_H

#ifndef QT_H
#include "qobject.h"
#include "qhostaddress.h"
#include "qsocketnotifier.h"
#include "qstringlist.h"
#endif // QT_H

#if !defined( QT_MODULE_NETWORK ) || defined( QT_LICENSE_PROFESSIONAL ) || defined( QT_INTERNAL_NETWORK )
#define QM_EXPORT_DNS
#else
#define QM_EXPORT_DNS Q_EXPORT
#endif

#ifndef QT_NO_DNS

//#define Q_DNS_SYNCHRONOUS

class QDnsPrivate;

class QM_EXPORT_DNS QDns: public QObject {
    Q_OBJECT
public:
    enum RecordType {
	None,
	A, Aaaa,
	Mx, Srv,
	Cname,
	Ptr,
	Txt
    };

    QDns();
    QDns( const QString &amp; label, RecordType rr = A );
    QDns( const QHostAddress &amp; address, RecordType rr = Ptr );
    virtual ~QDns();

    // to set/change the query
    virtual void setLabel( const QString &amp; label );
    virtual void setLabel( const QHostAddress &amp; address );
    QString label() const { return l; }

    virtual void setRecordType( RecordType rr = A );
    RecordType recordType() const { return t; }

    // whether something is happening behind the scenes
    bool isWorking() const;

    // to query for replies
    QValueList&lt;QHostAddress&gt; addresses() const;

    class QM_EXPORT_DNS MailServer {
    public:
	MailServer( const QString &amp; n=QString::null, Q_UINT16 p=0 )
	    :name(n), priority(p) {}
	QString name;
	Q_UINT16 priority;
	Q_DUMMY_COMPARISON_OPERATOR(MailServer)
    };
    QValueList&lt;MailServer&gt; mailServers() const;

    class QM_EXPORT_DNS Server {
    public:
	Server(const QString &amp; n=QString::null, Q_UINT16 p=0, Q_UINT16 w=0, Q_UINT16 po=0 )
	    : name(n), priority(p), weight(w), port(po) {}
	QString name;
	Q_UINT16 priority;
	Q_UINT16 weight;
	Q_UINT16 port;
	Q_DUMMY_COMPARISON_OPERATOR(Server)
    };
    QValueList&lt;Server&gt; servers() const;

    QStringList hostNames() const;

    QStringList texts() const;

    QString canonicalName() const; // ### real-world but uncommon: QStringList

    QStringList qualifiedNames() const { return n; }

#if defined(Q_DNS_SYNCHRONOUS)
protected:
    void connectNotify( const char *signal );
#endif

signals:
    void resultsReady();

private slots:
    void startQuery();

private:
    static void doResInit();
    void setStartQueryTimer();
    static QString toInAddrArpaDomain( const QHostAddress &amp;address );
#if defined(Q_DNS_SYNCHRONOUS)
    void doSynchronousLookup();
#endif

    QString l;
    QStringList n;
    RecordType t;
    QDnsPrivate * d;

    friend class QDnsAnswer;
    friend class QDnsManager;
};


// QDnsSocket are sockets that are used for DNS lookup

class QDnsSocket: public QObject {
    Q_OBJECT
    // note: Private not public.  This class contains NO public API.
protected:
    QDnsSocket( QObject *, const char * );
    virtual ~QDnsSocket();

private slots:
    virtual void cleanCache();
    virtual void retransmit();
    virtual void answer();
};

#endif // QT_NO_DNS

#endif // QDNS_H
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