qsocket.h

/****************************************************************************
** $Id: //depot/qt/main/extensions/network/src/qsocket.h#6 $
**
** Implementation of Network Extension Library
**
** Created : 970521
**
** 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 QSOCKET_H
#define QSOCKET_H

#ifndef QT_H
#include "qsocketdevice.h"
#include "qsocketnotifier.h"
#endif // QT_H


class QSocketPrivate;


class QSocket : public QObject, public QIODevice
{
    Q_OBJECT
public:
    enum Error {
        ErrConnectionRefused, 
        ErrHostNotFound,
        ErrSocketRead
    };
    
    QSocket( QObject *parent=0, const char *name=0 );
    QSocket( int socket, QObject *parent=0, const char *name=0 );
   ~QSocket();

    enum State { Idle, HostLookup, Connecting, Connection, Closing };
    State        state() const;

    enum Mode { Binary, Ascii };
    Mode         mode() const;
    void         setMode( Mode );

    void         connectToHost( const QString &host, int port );
    QString      host() const;
    int          port() const;

    // Implementation of QIODevice abstract virtual functions
    bool         open( int mode );
    void         close();
    void         flush();
    uint         size() const;
    int          at() const;
    bool         at( int );
    bool         atEnd() const;

    int          bytesAvailable() const;
    int          bytesToWrite() const;

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

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

    bool         canReadLine() const;
    QString      readLine();

signals:
    void         hostFound();
    void         connected();
    void         closed();
    void         delayedCloseFinished();
    void         readyRead();
    void         bytesWritten( int nbytes );
    void         error( int );

protected slots:
    virtual void sn_read();
    virtual void sn_write();

protected:
    QSocketDevice *socketDevice();
    void         timerEvent( QTimerEvent * );

private slots:
    void         tryConnecting();

private:
    QSocketPrivate *d;

    bool         consumeReadBuf( int nbytes, char * );
    bool         consumeWriteBuf( int nbytes );
    bool         scanNewline( QByteArray * = 0 );

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


#endif // QSOCKET_H