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// Copyright (C) 2018 The Qt Company Ltd.
// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR GPL-3.0-only
#include "configuration.h"
#include <QCoreApplication>
#include <QMqttClient>
#include <QSslSocket>
#include <QTimer>
int main(int argc, char *argv[])
{
QCoreApplication a(argc, argv);
QCoreApplication::setApplicationName(QStringLiteral("qtmqtt_sub"));
QCoreApplication::setApplicationVersion(QStringLiteral("1.0"));
// Create the client
Configuration description;
auto *client = createClientWithConfiguration(&a, &description, false);
if (!client)
return -1;
a.connect(client, &QMqttClient::errorChanged, [&client](const QMqttClient::ClientError e) {
if (e == QMqttClient::NoError)
return;
qWarning() << "Error Occurred:" << e << " Client state:" << client->state();
client->disconnectFromHost();
});
a.connect(client, &QMqttClient::stateChanged, [&client] (QMqttClient::ClientState s) {
if (s == QMqttClient::Disconnected) {
client->deleteLater();
qApp->quit();
}
});
a.connect(client, &QMqttClient::connected, [&client, description]() {
auto sub = client->subscribe(description.topic, description.qos);
client->connect(sub, &QMqttSubscription::stateChanged, [&client](QMqttSubscription::SubscriptionState s) {
qInfo() << "Subscription state:" << s;
if (s == QMqttSubscription::Unsubscribed)
client->disconnectFromHost();
});
client->connect(sub, &QMqttSubscription::messageReceived, [](const QMqttMessage &msg) {
qInfo() << "ID:" << msg.id()
<< "Topic:" << msg.topic().name()
<< "QoS:" << msg.qos()
<< "Retain:" << msg.retain()
<< "Duplicate:" << msg.duplicate()
<< "Payload:" << msg.payload().left(50) << (msg.payload().size() > 50 ? "..." : "");
});
});
#ifndef QT_NO_SSL
if (description.useEncryption)
client->connectToHostEncrypted(description.sslConfiguration);
else
#endif
client->connectToHost();
return a.exec();
}
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