166 lines
4.6 KiB
C++
166 lines
4.6 KiB
C++
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GitHub is home to over 50 million developers working together to host and review code, manage projects, and build software together.
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qmqtt/examples/qmqtt/client/example.cpp
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@KonstantinRitt
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KonstantinRitt Rename module to qmqtt
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…
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Latest commit ada0692 on Aug 21, 2018
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History
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1 contributor
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132 lines (119 sloc) 4.14 KB
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/*
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* example.cpp - qmqtt example
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*
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* Copyright (c) 2013 Ery Lee <ery.lee at gmail dot com>
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions are met:
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*
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* * Redistributions of source code must retain the above copyright notice,
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* this list of conditions and the following disclaimer.
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* * Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* * Neither the name of mqttc nor the names of its contributors may be used
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* to endorse or promote products derived from this software without
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* specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
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* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
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* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*
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*/
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#include <qmqtt.h>
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#include <QCoreApplication>
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#include <QTimer>
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const QHostAddress EXAMPLE_HOST = QHostAddress("172.16.1.254");
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const quint16 EXAMPLE_PORT = 1883;
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const QString EXAMPLE_TOPIC = "home/bell/ring";
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class Publisher : public QMQTT::Client
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{
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Q_OBJECT
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public:
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explicit Publisher(const QHostAddress& host = EXAMPLE_HOST,
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const quint16 port = EXAMPLE_PORT,
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QObject* parent = NULL)
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: QMQTT::Client(host, port, parent)
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, _number(0)
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{
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connect(this, &Publisher::connected, this, &Publisher::onConnected);
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connect(&_timer, &QTimer::timeout, this, &Publisher::onTimeout);
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connect(this, &Publisher::disconnected, this, &Publisher::onDisconnected);
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}
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virtual ~Publisher() {}
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QTimer _timer;
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quint16 _number;
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public slots:
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void onConnected()
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{
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subscribe(EXAMPLE_TOPIC, 0);
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_timer.start(1000);
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}
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void onTimeout()
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{
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QMQTT::Message message(_number, EXAMPLE_TOPIC,
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QString("Number is %1").arg(_number).toUtf8());
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publish(message);
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_number++;
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if(_number >= 10)
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{
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_timer.stop();
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disconnectFromHost();
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}
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}
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void onDisconnected()
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{
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QTimer::singleShot(0, qApp, &QCoreApplication::quit);
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}
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};
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class Subscriber : public QMQTT::Client
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{
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Q_OBJECT
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public:
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explicit Subscriber(const QHostAddress& host = EXAMPLE_HOST,
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const quint16 port = EXAMPLE_PORT,
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QObject* parent = NULL)
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: QMQTT::Client(host, port, parent)
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, _qout(stdout)
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{
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connect(this, &Subscriber::connected, this, &Subscriber::onConnected);
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connect(this, &Subscriber::subscribed, this, &Subscriber::onSubscribed);
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connect(this, &Subscriber::received, this, &Subscriber::onReceived);
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}
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virtual ~Subscriber() {}
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QTextStream _qout;
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public slots:
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void onConnected()
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{
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_qout << "connected" << endl;
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subscribe(EXAMPLE_TOPIC, 0);
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}
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void onSubscribed(const QString& topic)
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{
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_qout << "subscribed " << topic << endl;
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}
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void onReceived(const QMQTT::Message& message)
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{
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_qout << "publish received: \"" << QString::fromUtf8(message.payload())
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<< "\"" << endl;
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}
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};
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int main(int argc, char** argv)
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{
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QCoreApplication app(argc, argv);
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Subscriber subscriber;
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subscriber.connectToHost();
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Publisher publisher;
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publisher.connectToHost();
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return app.exec();
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}
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