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****************************************************************************/

#ifndef Q3HTTP_H

#define Q3HTTP_H

#include <QtCore/qobject.h>

#include <Qt3Support/q3networkprotocol.h>

#include <QtCore/qmap.h>

#include <QtCore/qstringlist.h>

QT_BEGIN_HEADER

QT_BEGIN_NAMESPACE

QT_MODULE(Qt3Support)

#ifndef QT_NO_HTTP

class Q3Socket;

class QTimerEvent;

class QTextStream;

class QIODevice;

class Q3HttpPrivate;

class Q3HttpRequest;

class Q_COMPAT_EXPORT Q3HttpHeader

{

public:

    Q3HttpHeader();

    Q3HttpHeader( const Q3HttpHeader& header );

    Q3HttpHeader( const QString& str );

    virtual ~Q3HttpHeader();

    Q3HttpHeader& operator=( const Q3HttpHeader& h );

    QString value( const QString& key ) const;

    void setValue( const QString& key, const QString& value );

    void removeValue( const QString& key );

    QStringList keys() const;

    bool hasKey( const QString& key ) const;

    bool hasContentLength() const;

    uint contentLength() const;

    void setContentLength( int len );

    bool hasContentType() const;

    QString contentType() const;

    void setContentType( const QString& type );

    virtual QString toString() const;

    bool isValid() const;

    virtual int majorVersion() const = 0;

    virtual int minorVersion() const = 0;

protected:

    virtual bool parseLine( const QString& line, int number );

    bool parse( const QString& str );

    void setValid( bool );

private:

    QMap<QString,QString> values;

    bool valid;

};

class Q_COMPAT_EXPORT Q3HttpResponseHeader : public Q3HttpHeader

{

private:

    Q3HttpResponseHeader( int code, const QString& text = QString(), int majorVer = 1, int minorVer = 1 );

    Q3HttpResponseHeader( const QString& str );

    void setStatusLine( int code, const QString& text = QString(), int majorVer = 1, int minorVer = 1 );

public:

    Q3HttpResponseHeader();

    Q3HttpResponseHeader( const Q3HttpResponseHeader& header );

    int statusCode() const;

    QString reasonPhrase() const;

    int majorVersion() const;

    int minorVersion() const;

    QString toString() const;

protected:

    bool parseLine( const QString& line, int number );

private:

    int statCode;

    QString reasonPhr;

    int majVer;

    int minVer;

    friend class Q3Http;

};

class Q_COMPAT_EXPORT Q3HttpRequestHeader : public Q3HttpHeader

{

public:

    Q3HttpRequestHeader();

    Q3HttpRequestHeader( const QString& method, const QString& path, int majorVer = 1, int minorVer = 1 );

    Q3HttpRequestHeader( const Q3HttpRequestHeader& header );

    Q3HttpRequestHeader( const QString& str );

    void setRequest( const QString& method, const QString& path, int majorVer = 1, int minorVer = 1 );

    QString method() const;

    QString path() const;

    int majorVersion() const;

    int minorVersion() const;

    QString toString() const;

protected:

    bool parseLine( const QString& line, int number );

private:

    QString m;

    QString p;

    int majVer;

    int minVer;

};

class Q_COMPAT_EXPORT Q3Http : public Q3NetworkProtocol

{

    Q_OBJECT

public:

    Q3Http();

    Q3Http( QObject* parent, const char* name = 0 ); // ### Qt 4.0: make parent=0 and get rid of the Q3Http() constructor

    Q3Http( const QString &hostname, Q_UINT16 port=80, QObject* parent=0, const char* name = 0 );

    virtual ~Q3Http();

    int supportedOperations() const;

    enum State { Unconnected, HostLookup, Connecting, Sending, Reading, Connected, Closing };

    enum Error {

	NoError,

	UnknownError,

	HostNotFound,

	ConnectionRefused,

	UnexpectedClose,

	InvalidResponseHeader,

	WrongContentLength,

	Aborted

    };

    int setHost(const QString &hostname, Q_UINT16 port=80 );

    int get( const QString& path, QIODevice* to=0 );

    int post( const QString& path, QIODevice* data, QIODevice* to=0  );

    int post( const QString& path, const QByteArray& data, QIODevice* to=0 );

    int head( const QString& path );

    int request( const Q3HttpRequestHeader &header, QIODevice *device=0, QIODevice *to=0 );

    int request( const Q3HttpRequestHeader &header, const QByteArray &data, QIODevice *to=0 );

    int closeConnection();

    Q_ULONG bytesAvailable() const;

    Q_LONG readBlock( char *data, Q_ULONG maxlen );

    QByteArray readAll();

    int currentId() const;

    QIODevice* currentSourceDevice() const;

    QIODevice* currentDestinationDevice() const;

    Q3HttpRequestHeader currentRequest() const;

    bool hasPendingRequests() const;

    void clearPendingRequests();

    State state() const;

    Error error() const;

    QString errorString() const;

public Q_SLOTS:

    void abort();

Q_SIGNALS:

    void stateChanged( int );

    void responseHeaderReceived( const Q3HttpResponseHeader& resp );

    void readyRead( const Q3HttpResponseHeader& resp );

    void dataSendProgress( int, int );

    void dataReadProgress( int, int );

    void requestStarted( int );

    void requestFinished( int, bool );

    void done( bool );

protected:

    void operationGet( Q3NetworkOperation *op );

    void operationPut( Q3NetworkOperation *op );

    void timerEvent( QTimerEvent * );

private Q_SLOTS:

    void clientReply( const Q3HttpResponseHeader &rep );

    void clientDone( bool );

    void clientStateChanged( int );

    void startNextRequest();

    void slotReadyRead();

    void slotConnected();

    void slotError( int );

    void slotClosed();

    void slotBytesWritten( int );

private:

    Q3HttpPrivate *d;

    void *unused; // ### Qt 4.0: remove this (in for binary compatibility)

    int bytesRead;

    int addRequest( Q3HttpRequest * );

    void sendRequest();

    void finishedWithSuccess();

    void finishedWithError( const QString& detail, int errorCode );

    void killIdleTimer();

    void init();

    void setState( int );

    void close();

    friend class Q3HttpNormalRequest;

    friend class Q3HttpSetHostRequest;

    friend class Q3HttpCloseRequest;

    friend class Q3HttpPGHRequest;

};

#endif // QT_NO_HTTP

QT_END_NAMESPACE

QT_END_HEADER

#endif // Q3HTTP_H