/****************************************************************************
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** Copyright (C) 2021 The Qt Company Ltd.
** Contact: https://www.qt.io/licensing/
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** This file is part of the QtSerialBus module of the Qt Toolkit.
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** information use the contact form at https://www.qt.io/contact-us.
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** $QT_END_LICENSE$
**
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****************************************************************************/

#ifndef QMODBUSTCPSERVER_H
#define QMODBUSTCPSERVER_H

#include <QtSerialBus/qmodbuspdu.h>
#include <QtSerialBus/qmodbusserver.h>

QT_BEGIN_NAMESPACE

class QModbusTcpServerPrivate;
class QTcpSocket;

class Q_SERIALBUS_EXPORT QModbusTcpConnectionObserver
{
public:
    virtual ~QModbusTcpConnectionObserver();

    virtual bool acceptNewConnection(QTcpSocket *newClient) = 0;
};

class Q_SERIALBUS_EXPORT QModbusTcpServer : public QModbusServer
{
    Q_OBJECT
    Q_DECLARE_PRIVATE(QModbusTcpServer)

public:
    explicit QModbusTcpServer(QObject *parent = nullptr);
    ~QModbusTcpServer();

    void installConnectionObserver(QModbusTcpConnectionObserver *observer);

Q_SIGNALS:
    void modbusClientDisconnected(QTcpSocket *modbusClient);

protected:
    QModbusTcpServer(QModbusTcpServerPrivate &dd, QObject *parent = nullptr);

    bool open() override;
    void close() override;

    QModbusResponse processRequest(const QModbusPdu &request) override;
};

QT_END_NAMESPACE

#endif // QMODBUSTCPSERVER_H