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q3socketdevice.h

/****************************************************************************
**
** Copyright (C) 1992-2007 Trolltech ASA. All rights reserved.
**
** This file is part of the Qt3Support module of the Qt Toolkit.
**
** This file may be used under the terms of the GNU General Public
** License version 2.0 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 ensure GNU
** General Public Licensing requirements will be met:
** http://www.trolltech.com/products/qt/opensource.html
**
** If you are unsure which license is appropriate for your use, please
** review the following information:
** http://www.trolltech.com/products/qt/licensing.html or contact the
** sales department at sales@trolltech.com.
**
** This file is provided AS IS with NO WARRANTY OF ANY KIND, INCLUDING THE
** WARRANTY OF DESIGN, MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
**
****************************************************************************/

#ifndef Q3SOCKETDEVICE_H
#define Q3SOCKETDEVICE_H

#include <QtCore/qiodevice.h>
#include <QtNetwork/qhostaddress.h> // int->QHostAddress conversion

QT_BEGIN_HEADER

QT_MODULE(Qt3Support)

#ifndef QT_NO_NETWORK

class Q3SocketDevicePrivate;

00038 class Q_COMPAT_EXPORT Q3SocketDevice: public QIODevice
{
public:
00041     enum Type { Stream, Datagram };
00042     enum Protocol { IPv4, IPv6, Unknown };

    Q3SocketDevice( Type type = Stream );
    Q3SocketDevice( Type type, Protocol protocol, int dummy );
    Q3SocketDevice( int socket, Type type );
    virtual ~Q3SocketDevice();

    bool     isValid() const;
    Type     type() const;
    Protocol       protocol() const;

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

    bool     open( OpenMode mode );
00057     bool     open( int mode ) { return open((OpenMode)mode); }
    void     close();
    bool     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();

    qint64   bytesAvailable() const;
    Q_LONG   waitForMore( int msecs, bool *timeout=0 ) const;
    virtual Q_LONG  writeBlock( const char *data, Q_ULONG len,
                      const QHostAddress & host, Q_UINT16 port );
00088     inline Q_LONG writeBlock(const char *data, Q_ULONG len)
        { return qint64(write(data, qint64(len))); }
00090     inline qint64 readBlock(char *data, Q_ULONG maxlen)
        { return qint64(read(data, qint64(maxlen))); }

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

00098     enum Error {
      NoError,
      AlreadyBound,
      Inaccessible,
      NoResources,
      InternalError,
      Bug = InternalError, // ### remove in 4.0?
      Impossible,
      NoFiles,
      ConnectionRefused,
      NetworkFailure,
      UnknownError
    };
    Error    error() const;

00113     inline bool isSequential() const { return true; }

protected:
    void setError( Error err );
    qint64 readData(char *data, qint64 maxlen);
    qint64 writeData(const char *data, qint64 len);

private:
    int fd;
    Type t;
    Q_UINT16 p;
    QHostAddress a;
    Q_UINT16 pp;
    QHostAddress pa;
    Q3SocketDevice::Error e;
    Q3SocketDevicePrivate * 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)
    Q3SocketDevice( const Q3SocketDevice & );
    Q3SocketDevice &operator=( const Q3SocketDevice & );
#endif
};

#endif // QT_NO_NETWORK

QT_END_HEADER

#endif // Q3SOCKETDEVICE_H

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