Simple CoAP Client Example | Qt CoAP 6.4.1

- Qt 6.4
- Qt CoAP
- Qt CoAP Examples
- Simple CoAP Client Example
- Qt 6.4.1 Reference Documentation

# Simple CoAP Client Example

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

     #include "optiondialog.h"
     #include "ui_optiondialog.h"

     OptionDialog::OptionDialog(QWidget *parent) :
         QDialog(parent),
         ui(new Ui::OptionDialog)
     {
         ui->setupUi(this);

         fillOptions();

         auto header = ui->tableWidget->horizontalHeader();
         header->setSectionResizeMode(QHeaderView::Stretch);
     }

     OptionDialog::~OptionDialog()
     {
         delete ui;
     }

     QList<QCoapOption> OptionDialog::options() const
     {
         return m_options;
     }

     void OptionDialog::on_addButton_clicked()
     {
         const auto option =
                 ui->optionComboBox->currentData(Qt::UserRole).value<QCoapOption::OptionName>();
         m_options.push_back(QCoapOption(option, ui->optionValueEdit->text()));

         const auto rowCount = ui->tableWidget->rowCount();
         ui->tableWidget->insertRow(rowCount);

         QTableWidgetItem *optionItem = new QTableWidgetItem(ui->optionComboBox->currentText());
         optionItem->setFlags(optionItem->flags() ^ Qt::ItemIsEditable);
         ui->tableWidget->setItem(rowCount, 0, optionItem);

         QTableWidgetItem *valueItem = new QTableWidgetItem(ui->optionValueEdit->text());
         valueItem->setFlags(valueItem->flags() ^ Qt::ItemIsEditable);
         ui->tableWidget->setItem(rowCount, 1, valueItem);
     }

     void OptionDialog::on_clearButton_clicked()
     {
         m_options.clear();
         ui->tableWidget->setRowCount(0);
     }

     void OptionDialog::fillOptions()
     {
         ui->tableWidget->setHorizontalHeaderLabels({"Name", "Value"});
         ui->optionComboBox->addItem("None", QCoapOption::Invalid);
         ui->optionComboBox->addItem("Block1", QCoapOption::Block1);
         ui->optionComboBox->addItem("Block2", QCoapOption::Block2);
         ui->optionComboBox->addItem("Content-Format", QCoapOption::ContentFormat);
         ui->optionComboBox->addItem("If-Match", QCoapOption::IfMatch);
         ui->optionComboBox->addItem("If-None-Match", QCoapOption::IfNoneMatch);
         ui->optionComboBox->addItem("Location-Path", QCoapOption::LocationPath);
         ui->optionComboBox->addItem("Location-Query", QCoapOption::LocationQuery);
         ui->optionComboBox->addItem("Max-Age", QCoapOption::MaxAge);
         ui->optionComboBox->addItem("Observe", QCoapOption::Observe);
         ui->optionComboBox->addItem("Proxy-Scheme", QCoapOption::ProxyScheme);
         ui->optionComboBox->addItem("Proxy-Uri", QCoapOption::ProxyUri);
         ui->optionComboBox->addItem("Size1", QCoapOption::Size1);
         ui->optionComboBox->addItem("Size2", QCoapOption::Size2);
         ui->optionComboBox->addItem("Uri-Host", QCoapOption::UriHost);
         ui->optionComboBox->addItem("Uri-Path", QCoapOption::UriPath);
         ui->optionComboBox->addItem("Uri-Port", QCoapOption::UriPort);
         ui->optionComboBox->addItem("Uri-Query", QCoapOption::UriQuery);
     }