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// Copyright (C) 2018 The Qt Company Ltd.
// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR BSD-3-Clause
#include <QtCore>
#include <QtNetwork>
#include "addressdialog.h"
#include "association.h"
#include "mainwindow.h"
#include "ui_mainwindow.h"
#include <utility>
MainWindow::MainWindow(QWidget *parent)
: QMainWindow(parent),
ui(new Ui::MainWindow),
nameTemplate(QStringLiteral("Alice (clone number %1)"))
{
ui->setupUi(this);
updateUi();
}
MainWindow::~MainWindow()
{
delete ui;
}
//! [0]
const QString colorizer(QStringLiteral("<font color=\"%1\">%2</font><br>"));
void MainWindow::addErrorMessage(const QString &message)
{
ui->clientMessages->insertHtml(colorizer.arg(QStringLiteral("Crimson"), message));
}
void MainWindow::addWarningMessage(const QString &message)
{
ui->clientMessages->insertHtml(colorizer.arg(QStringLiteral("DarkOrange"), message));
}
void MainWindow::addInfoMessage(const QString &message)
{
ui->clientMessages->insertHtml(colorizer.arg(QStringLiteral("DarkBlue"), message));
}
void MainWindow::addServerResponse(const QString &clientInfo, const QByteArray &datagram,
const QByteArray &plainText)
{
static const QString messageColor = QStringLiteral("DarkMagenta");
static const QString formatter = QStringLiteral("<br>---------------"
"<br>%1 received a DTLS datagram:<br> %2"
"<br>As plain text:<br> %3");
const QString html = formatter.arg(clientInfo, QString::fromUtf8(datagram.toHex(' ')),
QString::fromUtf8(plainText));
ui->serverMessages->insertHtml(colorizer.arg(messageColor, html));
}
//! [0]
void MainWindow::on_connectButton_clicked()
{
if (lookupId != -1) {
QHostInfo::abortHostLookup(lookupId);
lookupId = -1;
port = 0;
updateUi();
return;
}
AddressDialog dialog;
if (dialog.exec() != QDialog::Accepted)
return;
const QString hostName = dialog.remoteName();
if (hostName.isEmpty())
return addWarningMessage(tr("Host name or address required to connect"));
port = dialog.remotePort();
QHostAddress remoteAddress;
if (remoteAddress.setAddress(hostName))
return startNewConnection(remoteAddress);
addInfoMessage(tr("Looking up the host ..."));
lookupId = QHostInfo::lookupHost(hostName, this, &MainWindow::lookupFinished);
updateUi();
}
void MainWindow::updateUi()
{
ui->connectButton->setText(lookupId == -1 ? tr("Connect ...") : tr("Cancel lookup"));
ui->shutdownButton->setEnabled(connections.size() != 0);
}
void MainWindow::lookupFinished(const QHostInfo &hostInfo)
{
if (hostInfo.lookupId() != lookupId)
return;
lookupId = -1;
updateUi();
if (hostInfo.error() != QHostInfo::NoError) {
addErrorMessage(hostInfo.errorString());
return;
}
const QList<QHostAddress> foundAddresses = hostInfo.addresses();
if (foundAddresses.empty()) {
addWarningMessage(tr("Host not found"));
return;
}
const auto remoteAddress = foundAddresses.at(0);
addInfoMessage(tr("Connecting to: %1").arg(remoteAddress.toString()));
startNewConnection(remoteAddress);
}
void MainWindow::startNewConnection(const QHostAddress &address)
{
AssocPtr newConnection(new DtlsAssociation(address, port, nameTemplate.arg(nextId)));
connect(newConnection.data(), &DtlsAssociation::errorMessage, this, &MainWindow::addErrorMessage);
connect(newConnection.data(), &DtlsAssociation::warningMessage, this, &MainWindow::addWarningMessage);
connect(newConnection.data(), &DtlsAssociation::infoMessage, this, &MainWindow::addInfoMessage);
connect(newConnection.data(), &DtlsAssociation::serverResponse, this, &MainWindow::addServerResponse);
connections.push_back(std::move(newConnection));
connections.back()->startHandshake();
updateUi();
++nextId;
}
void MainWindow::on_shutdownButton_clicked()
{
connections.clear();
updateUi();
}
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