| /**************************************************************************** |
| ** |
| ** Copyright (C) 2017 The Qt Company Ltd. |
| ** Contact: http://www.qt.io/licensing/ |
| ** |
| ** This file is part of the QtSerialBus module of the Qt Toolkit. |
| ** |
| ** $QT_BEGIN_LICENSE:LGPL3$ |
| ** 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 http://www.qt.io/terms-conditions. For further |
| ** information use the contact form at http://www.qt.io/contact-us. |
| ** |
| ** GNU Lesser General Public License Usage |
| ** Alternatively, this file may be used under the terms of the GNU Lesser |
| ** General Public License version 3 as published by the Free Software |
| ** Foundation and appearing in the file LICENSE.LGPLv3 included in the |
| ** packaging of this file. Please review the following information to |
| ** ensure the GNU Lesser General Public License version 3 requirements |
| ** will be met: https://www.gnu.org/licenses/lgpl.html. |
| ** |
| ** GNU General Public License Usage |
| ** Alternatively, this file may be used under the terms of the GNU |
| ** General Public License version 2.0 or later as published by the Free |
| ** Software Foundation and appearing in the file LICENSE.GPL included in |
| ** the packaging of this file. Please review the following information to |
| ** ensure the GNU General Public License version 2.0 requirements will be |
| ** met: http://www.gnu.org/licenses/gpl-2.0.html. |
| ** |
| ** $QT_END_LICENSE$ |
| ** |
| ****************************************************************************/ |
| |
| #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 |