Quick CoAP Multicast Discovery

 // Copyright (C) 2019 The Qt Company Ltd.
 // SPDX-License-Identifier: LicenseRef-Qt-Commercial OR BSD-3-Clause

 #include <QGuiApplication>
 #include <QQmlApplicationEngine>

 int main(int argc, char *argv[])
 {
     QGuiApplication app(argc, argv);

     QQmlApplicationEngine engine;
     QObject::connect(&engine, &QQmlApplicationEngine::objectCreationFailed,
                      &app, []() { QCoreApplication::exit(1); },
                      Qt::QueuedConnection);
     engine.loadFromModule("CoapClientModule", "Main");

     return app.exec();
 }