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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/qsocketdevice.h   3.3.4   edited Oct 3 2003 $
    **
    ** 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 "qhostaddress.h" // int->QHostAddress conversion
    #endif // QT_H

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

    #ifndef QT_NO_NETWORK
    class QSocketDevicePrivate;

    class  QM_EXPORT_NETWORK QSocketDevice: public QIODevice
    {
    public:
        enum Type { Stream, Datagram };
        enum Protocol { IPv4, IPv6, Unknown };

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

        bool	 isValid() const;
        Type	 type() const;
        Protocol	 protocol() 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
        Offset	 size() const;
        Offset	 at() const;
        bool	 at( Offset );
        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();

        Q_LONG	 bytesAvailable() const;
        Q_LONG	 waitForMore( int msecs, bool *timeout=0 ) const;
        Q_LONG	 readBlock( char *data, Q_ULONG maxlen );
        Q_LONG	 writeBlock( const char *data, Q_ULONG len );
        virtual Q_LONG  writeBlock( const char *data, Q_ULONG 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,
    	InternalError,
    	Bug = InternalError, // ### remove in 4.0?
    	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();
    #if defined(Q_OS_WIN32)
        void	 fetchPeerConnectionParameters();
    #endif

        static void  init();
        int		 createNewSocket();
        Protocol	 getProtocol() const;

    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