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This is the verbatim text of the qsocketdevice.h include file. It is provided only for illustration; the copyright remains with Troll Tech.
** $Id: qsocketdevice.h,v 1.7 1999/04/28 09:57:47 aavit Exp $
** Definition of QSocketDevice class
** Created : 990221
** Copyright (C) 1992-1999 Troll Tech AS.  All rights reserved.
** This file is part of the Qt GUI Toolkit.
** This file may be distributed under the terms of the Q Public License
** as defined by Troll Tech AS of Norway and appearing in the file
** LICENSE.QPL included in the packaging of this file.
** Licensees holding valid Qt Professional Edition licenses may use this
** file in accordance with the Qt Professional Edition License Agreement
** provided with the Qt Professional Edition.
** See http://www.troll.no/pricing.html or email sales@troll.no for
** information about the Professional Edition licensing, or see
** http://www.troll.no/qpl/ for QPL licensing information.


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

class Q_EXPORT QSocketAddress
    QSocketAddress( int port, uint ip4Addr=0 );
    QSocketAddress( const QSocketAddress & );

    QSocketAddress & operator=( const QSocketAddress & );

    int          port()          const;
    uint         ip4Addr()       const;
    QString      ip4AddrString() const;

    bool         operator==( const QSocketAddress & );

    void        *data()    const { return ptr; }
    int          length()  const { return len; }
    void         setData( void *, int );

    char        *ptr;
    int          len;

    friend class QSocketDevice;

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

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

    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         nonblocking() const;
    virtual void setNonblocking( bool );

    enum Option { Broadcast, Debug, DontRoute, KeepAlive, Linger,
                  OobInline, ReceiveBuffer, ReuseAddress, SendBuffer };

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

    enum Error { OK, InProgress, Failed };
    Error        lastError() const;

    bool         connect( const QSocketAddress & );

    virtual bool bind( const QSocketAddress & );
    virtual bool listen( int backlog );
    virtual int  accept( QSocketAddress * );

    int          bytesAvailable() const;
    int          readBlock( char *data, uint maxlen );
    int          writeBlock( const char *data, uint len );

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

#if defined(_OS_WIN32_)
    static bool initWinSock();

    Type         sock_type;
    int          sock_fd;

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

inline bool QSocketDevice::isValid() const
    return sock_type != -1;

inline QSocketDevice::Type QSocketDevice::type() const
    return sock_type;

inline int QSocketDevice::socket() const
    return sock_fd;


Copyright 1999 Troll TechTrademarks
Qt version 2.0.2