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# qsocketdevice.h

This is the verbatim text of the qsocketdevice.h include file. It is provided only for illustration; the copyright remains with Trolltech.

    /****************************************************************************
    ** $Id: qt/src/network/qsocketdevice.h   2.3.1   edited 2001-01-26 $
    **
    ** Definition of QSocketDevice class.
    **
    ** Created : 970521
    **
    ** Copyright (C) 1992-2000 Trolltech AS.  All rights reserved.
    **
    ** This file is part of the network module of the Qt GUI Toolkit.
    **
    ** This file may be distributed under the terms of the Q Public License
    ** as defined by Trolltech AS of Norway and appearing in the file
    ** LICENSE.QPL included in the packaging of this file.
    **
    ** This file may be distributed and/or modified under the terms of the
    ** GNU General Public License version 2 as published by the Free Software
    ** Foundation and appearing in the file LICENSE.GPL included in the
    ** packaging of this file.
    **
    ** Licensees holding valid Qt Enterprise Edition 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
    ** WARRANTY OF DESIGN, MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
    **
    ** See http://www.trolltech.com/pricing.html or email sales@trolltech.com for
    **   information about Qt Commercial License Agreements.
    ** See http://www.trolltech.com/qpl/ for QPL licensing information.
    ** See http://www.trolltech.com/gpl/ for GPL licensing information.
    **
    ** Contact info@trolltech.com if any conditions of this licensing are
    ** not clear to you.
    **
    **********************************************************************/

    #ifndef QSOCKETDEVICE_H
    #define QSOCKETDEVICE_H

    #ifndef QT_H
    #include "qiodevice.h"
    #include "qstring.h"
    #include "qhostaddress.h"
    #endif // QT_H

    #ifndef QT_NO_NETWORK
    class QSocketDevicePrivate;

    class  Q_EXPORT QSocketDevice: public QIODevice
    {
    public:
        enum Type { Stream, Datagram };

        QSocketDevice( Type type = Stream );
        QSocketDevice( int socket, Type type );
        virtual ~QSocketDevice();

        bool         isValid() const;
        Type         type() const;
        int          socket() const;
        virtual void setSocket( int socket, Type type );

        bool         open( int mode );
        void         close();
        void         flush();

        // Implementation of QIODevice abstract virtual functions
        uint         size() const;
        int          at() const;
        bool         at( int );
        bool         atEnd() const;

        bool         blocking() const;
        virtual void setBlocking( bool );

        bool         addressReusable() const;
        virtual void setAddressReusable( bool );

        int          receiveBufferSize() const;
        virtual void setReceiveBufferSize( uint );
        int          sendBufferSize() const;
        virtual void setSendBufferSize( uint );

        virtual bool connect( const QHostAddress &, Q_UINT16 );

        virtual bool bind( const QHostAddress &, Q_UINT16 );
        virtual bool listen( int backlog );
        virtual int  accept();

        int          bytesAvailable() const;
        int          waitForMore( int msecs ) const;
        int          readBlock( char *data, uint maxlen );
        int          writeBlock( const char *data, uint len );
        virtual int  writeBlock( const char *data, uint len,
                                const QHostAddress & host, Q_UINT16 port );

        int          getch();
        int          putch( int );
        int          ungetch(int);

        Q_UINT16     port() const;
        Q_UINT16     peerPort() const;
        QHostAddress address() const;
        QHostAddress peerAddress() const;

        enum Error { NoError, AlreadyBound, Inaccessible, NoResources,
                     Bug, Impossible, NoFiles, ConnectionRefused,
                     NetworkFailure, UnknownError };
        Error        error() const;

    protected:
        void setError( Error err );

    private:
        int fd;
        Type t;
        Q_UINT16 p;
        QHostAddress a;
        Q_UINT16 pp;
        QHostAddress pa;
        QSocketDevice::Error e;
        QSocketDevicePrivate * d;

        enum Option { Broadcast, ReceiveBuffer, ReuseAddress, SendBuffer };

        int          option( Option ) const;
        virtual void setOption( Option, int );

        void         fetchConnectionParameters();

        static void init();

    private:        // Disabled copy constructor and operator=
    #if defined(Q_DISABLE_COPY)
        QSocketDevice( const QSocketDevice & );
        QSocketDevice &operator=( const QSocketDevice & );
    #endif
    };

    #endif // QT_NO_NETWORK
    #endif // QSOCKETDEVICE_H