mainwindow.cpp Example File

secureudpserver/mainwindow.cpp
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#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")); } 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)); }