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

#ifndef QNETWORKSESSION_H
#define QNETWORKSESSION_H

#include <QtCore/qobject.h>
#include <QtCore/qstring.h>
#include <QtNetwork/qnetworkinterface.h>
#include <QtCore/qvariant.h>
#include <QtNetwork/qnetworkconfiguration.h>

QT_BEGIN_HEADER

QT_BEGIN_NAMESPACE

QT_MODULE(Network)

class QNetworkSessionPrivate;
class Q_NETWORK_EXPORT QNetworkSession : public QObject
{
    Q_OBJECT
public:
    enum State {
        Invalid = 0,
        NotAvailable,
        Connecting,
        Connected,
        Closing,
        Disconnected,
        Roaming
    };

    enum SessionError {
        UnknownSessionError = 0,
        SessionAbortedError,
        RoamingError,
        OperationNotSupportedError,
        InvalidConfigurationError
    };

    QNetworkSession(const QNetworkConfiguration& connConfig, QObject* parent =0);
    virtual ~QNetworkSession();

    bool isOpen() const;
    QNetworkConfiguration configuration() const;
    QNetworkInterface interface() const;

    State state() const;
    SessionError error() const;
    QString errorString() const;
    QVariant sessionProperty(const QString& key) const;
    void setSessionProperty(const QString& key, const QVariant& value);

    quint64 bytesWritten() const;
    quint64 bytesReceived() const;
    quint64 activeTime() const;
    
    bool waitForOpened(int msecs = 30000);

public Q_SLOTS:
    void open();
    void close();
    void stop();

    //roaming related slots
    void migrate();
    void ignore();
    void accept();
    void reject();


Q_SIGNALS:
    void stateChanged(QNetworkSession::State);
    void opened();
    void closed();
    void error(QNetworkSession::SessionError);
    void preferredConfigurationChanged(const QNetworkConfiguration& config, bool isSeamless);
    void newConfigurationActivated();

protected:
    virtual void connectNotify(const char *signal);
    virtual void disconnectNotify(const char *signal);

private:
    QNetworkSessionPrivate* d;
    friend class QNetworkSessionPrivate;
    };

QT_END_NAMESPACE

QT_END_HEADER

#endif //QNETWORKSESSION_H