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/****************************************************************************
**
** Copyright (C) 2021 The Qt Company Ltd.
** Contact: https://www.qt.io/licensing/
**
** This file is part of the QtSerialBus module of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE:COMM$
**
** Commercial License Usage
** Licensees holding valid commercial Qt licenses may use this file in
** accordance with the commercial license agreement provided with the
** Software or, alternatively, in accordance with the terms contained in
** a written agreement between you and The Qt Company. For licensing terms
** and conditions see https://www.qt.io/terms-conditions. For further
** information use the contact form at https://www.qt.io/contact-us.
**
** $QT_END_LICENSE$
**
**
**
**
**
**
**
**
**
**
**
**
**
**
**
**
****************************************************************************/
#include "qmodbustcpclient.h"
#include "qmodbustcpclient_p.h"
#include <QtCore/qurl.h>
QT_BEGIN_NAMESPACE
/*!
\class QModbusTcpClient
\inmodule QtSerialBus
\since 5.8
\brief The QModbusTcpClient class is the interface class for Modbus TCP client device.
QModbusTcpClient communicates with the Modbus backend providing users with a convenient API.
*/
/*!
Constructs a QModbusTcpClient with the specified \a parent.
*/
QModbusTcpClient::QModbusTcpClient(QObject *parent)
: QModbusClient(*new QModbusTcpClientPrivate, parent)
{
Q_D(QModbusTcpClient);
d->setupTcpSocket();
}
/*!
Destroys the QModbusTcpClient instance.
*/
QModbusTcpClient::~QModbusTcpClient()
{
close();
}
/*!
\internal
*/
QModbusTcpClient::QModbusTcpClient(QModbusTcpClientPrivate &dd, QObject *parent)
: QModbusClient(dd, parent)
{
Q_D(QModbusTcpClient);
d->setupTcpSocket();
}
/*!
\reimp
*/
bool QModbusTcpClient::open()
{
if (state() == QModbusDevice::ConnectedState)
return true;
Q_D(QModbusTcpClient);
if (d->m_socket->state() != QAbstractSocket::UnconnectedState)
return false;
const QUrl url = QUrl::fromUserInput(d->m_networkAddress + QStringLiteral(":")
+ QString::number(d->m_networkPort));
if (!url.isValid()) {
setError(tr("Invalid connection settings for TCP communication specified."),
QModbusDevice::ConnectionError);
qCWarning(QT_MODBUS) << "(TCP client) Invalid host:" << url.host() << "or port:"
<< url.port();
return false;
}
d->m_socket->connectToHost(url.host(), url.port());
return true;
}
/*!
\reimp
*/
void QModbusTcpClient::close()
{
if (state() == QModbusDevice::UnconnectedState)
return;
Q_D(QModbusTcpClient);
d->m_socket->disconnectFromHost();
}
QT_END_NAMESPACE
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