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#ifndef Q3SOCKETDEVICE_H

#define Q3SOCKETDEVICE_H

#include <QtCore/qiodevice.h>

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

QT_BEGIN_HEADER

QT_BEGIN_NAMESPACE

QT_MODULE(Qt3Support)

#ifndef QT_NO_NETWORK

class Q3SocketDevicePrivate;

class Q_COMPAT_EXPORT Q3SocketDevice: public QIODevice

{

public:

    enum Type { Stream, Datagram };

    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 );

    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 );

    inline Q_LONG writeBlock(const char *data, Q_ULONG len)

        { return qint64(write(data, qint64(len))); }

    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;

    enum Error {

	NoError,

	AlreadyBound,

	Inaccessible,

	NoResources,

	InternalError,

	Bug = InternalError, // ### remove in 4.0?

	Impossible,

	NoFiles,

	ConnectionRefused,

	NetworkFailure,

	UnknownError

    };

    Error	 error() const;

    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) || defined(Q_OS_WINCE)

    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_NAMESPACE

QT_END_HEADER

#endif // Q3SOCKETDEVICE_H