Console CoAP Client Example

 /****************************************************************************
 **
 ** Copyright (C) 2017 Witekio.
 ** Copyright (C) 2018 The Qt Company Ltd.
 ** Contact: https://www.qt.io/licensing/
 **
 ** This file is part of the QtCoap module.
 **
 ** $QT_BEGIN_LICENSE:GPL$
 ** 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.
 **
 ** GNU General Public License Usage
 ** Alternatively, this file may be used under the terms of the GNU
 ** General Public License version 3 or (at your option) any later version
 ** approved by the KDE Free Qt Foundation. The licenses are as published by
 ** the Free Software Foundation and appearing in the file LICENSE.GPL3
 ** included in the packaging of this file. Please review the following
 ** information to ensure the GNU General Public License requirements will
 ** be met: https://www.gnu.org/licenses/gpl-3.0.html.
 **
 ** $QT_END_LICENSE$
 **
 ****************************************************************************/

 #include "coaphandler.h"

 #include <QCoreApplication>
 #include <QCommandLineParser>
 #include <QUrl>

 int main(int argc, char *argv[])
 {
     QCoreApplication a(argc, argv);

     QCommandLineParser parser;
     parser.setApplicationDescription("Qt CoAP test application");
     parser.addHelpOption();
     parser.addPositionalArgument("url",
                                  "The targeted coap resource URL, e.g. 'coap://10.10.10.10/myresource'");
     parser.addOption({"get", "Use GET method for the request. This is the default method"});
     parser.addOption({"post", "Use POST method for the request"});
     parser.addOption({"put", "Use PUT method for the request"});
     parser.addOption({"delete", "Use DELETE method for the request"});
     parser.addOption({"observe", "Observe a resource"});
     parser.addOption({"discover", "Discover available resources"});

     parser.process(a);

     if (parser.positionalArguments().isEmpty()) {
         qWarning("Please provide an url for the request");
         parser.showHelp(1);
     }

     QUrl url = parser.positionalArguments().first();
     if (!url.isValid()) {
         qWarning("The url provided is not valid.");
         parser.showHelp(1);
     }

     CoapHandler handler;
     if (parser.isSet("get"))        handler.runGet(url);
     if (parser.isSet("post"))       handler.runPost(url);
     if (parser.isSet("put"))        handler.runPut(url);
     if (parser.isSet("delete"))     handler.runDelete(url);
     if (parser.isSet("observe"))    handler.runObserve(url);
     if (parser.isSet("discover"))   handler.runDiscover(url);

     return a.exec();
 }