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-rw-r--r--examples/network/secureudpserver/mainwindow.cpp138
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diff --git a/examples/network/secureudpserver/mainwindow.cpp b/examples/network/secureudpserver/mainwindow.cpp
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+/****************************************************************************
+**
+** Copyright (C) 2018 The Qt Company Ltd.
+** Contact: https://www.qt.io/licensing/
+**
+** This file is part of the examples of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:BSD$
+** 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.
+**
+** BSD License Usage
+** Alternatively, you may use this file under the terms of the BSD license
+** as follows:
+**
+** "Redistribution and use in source and binary forms, with or without
+** modification, are permitted provided that the following conditions are
+** met:
+** * Redistributions of source code must retain the above copyright
+** notice, this list of conditions and the following disclaimer.
+** * Redistributions in binary form must reproduce the above copyright
+** notice, this list of conditions and the following disclaimer in
+** the documentation and/or other materials provided with the
+** distribution.
+** * Neither the name of The Qt Company Ltd nor the names of its
+** contributors may be used to endorse or promote products derived
+** from this software without specific prior written permission.
+**
+**
+** THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+** "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+** LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+** A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+** OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+** SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+** LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+** DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+** THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+** (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+** OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE."
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#include "mainwindow.h"
+#include "nicselector.h"
+#include "ui_mainwindow.h"
+
+MainWindow::MainWindow()
+ : ui(new Ui::MainWindow)
+{
+ ui->setupUi(this);
+
+ connect(&server, &DtlsServer::errorMessage, this, &MainWindow::addErrorMessage);
+ connect(&server, &DtlsServer::warningMessage, this, &MainWindow::addWarningMessage);
+ connect(&server, &DtlsServer::infoMessage, this, &MainWindow::addInfoMessage);
+ connect(&server, &DtlsServer::datagramReceived, this, &MainWindow::addClientMessage);
+
+ updateUi();
+}
+
+MainWindow::~MainWindow()
+{
+ delete ui;
+}
+
+void MainWindow::on_startButton_clicked()
+{
+ if (!server.isListening()) {
+ NicSelector ipDialog;
+ if (ipDialog.exec() == QDialog::Accepted) {
+ const QHostAddress address = ipDialog.selectedIp();
+ const quint16 port = ipDialog.selectedPort();
+ if (address.isNull()) {
+ addErrorMessage(tr("Failed to start listening, no valid address/port"));
+ } else if (server.listen(address, port)) {
+ addInfoMessage(tr("Server is listening on address %1 and port %2")
+ .arg(address.toString())
+ .arg(port));
+ }
+ }
+ } else {
+ server.close();
+ addInfoMessage(tr("Server is not accepting new connections"));
+ }
+
+ updateUi();
+}
+
+void MainWindow::on_quitButton_clicked()
+{
+ QCoreApplication::exit(0);
+}
+
+void MainWindow::updateUi()
+{
+ server.isListening() ? ui->startButton->setText(tr("Stop listening"))
+ : ui->startButton->setText(tr("Start listening"));
+}
+
+//! [0]
+const QString colorizer(QStringLiteral("<font color=\"%1\">%2</font><br>"));
+
+void MainWindow::addErrorMessage(const QString &message)
+{
+ ui->serverInfo->insertHtml(colorizer.arg(QStringLiteral("Crimson"), message));
+}
+
+void MainWindow::addWarningMessage(const QString &message)
+{
+ ui->serverInfo->insertHtml(colorizer.arg(QStringLiteral("DarkOrange"), message));
+}
+
+void MainWindow::addInfoMessage(const QString &message)
+{
+ ui->serverInfo->insertHtml(colorizer.arg(QStringLiteral("DarkBlue"), message));
+}
+
+void MainWindow::addClientMessage(const QString &peerInfo, const QByteArray &datagram,
+ const QByteArray &plainText)
+{
+ static const QString messageColor = QStringLiteral("DarkMagenta");
+ static const QString formatter = QStringLiteral("<br>---------------"
+ "<br>A message from %1"
+ "<br>DTLS datagram:<br> %2"
+ "<br>As plain text:<br> %3");
+
+ const QString html = formatter.arg(peerInfo, QString::fromUtf8(datagram.toHex(' ')),
+ QString::fromUtf8(plainText));
+ ui->messages->insertHtml(colorizer.arg(messageColor, html));
+}
+//! [0]