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++ // Copyright (C) 2017 The Qt Company Ltd.
++ // SPDX-License-Identifier: LicenseRef-Qt-Commercial OR BSD-3-Clause
++
++ #include <QtWidgets>
++ #include <QtNetwork>
++ #include <QtCore>
++
++ #include "server.h"
++
++ Server::Server(QWidget *parent)
++ : QDialog(parent)
++ , statusLabel(new QLabel)
++ {
++ statusLabel->setTextInteractionFlags(Qt::TextBrowserInteraction);
++
++ initServer();
++
++ //! [2]
++ fortunes << tr("You've been leading a dog's life. Stay off the furniture.")
++ << tr("You've got to think about tomorrow.")
++ << tr("You will be surprised by a loud noise.")
++ << tr("You will feel hungry again in another hour.")
++ << tr("You might have mail.")
++ << tr("You cannot kill time without injuring eternity.")
++ << tr("Computers are not intelligent. They only think they are.");
++ //! [2]
++ auto quitButton = new QPushButton(tr("Quit"));
++ quitButton->setAutoDefault(false);
++ connect(quitButton, &QAbstractButton::clicked, this, &QWidget::close);
++ //! [3]
++ connect(tcpServer, &QTcpServer::newConnection, this, &Server::sendFortune);
++ //! [3]
++
++ auto buttonLayout = new QHBoxLayout;
++ buttonLayout->addStretch(1);
++ buttonLayout->addWidget(quitButton);
++ buttonLayout->addStretch(1);
++
++ QVBoxLayout *mainLayout = nullptr;
++ if (QGuiApplication::styleHints()->showIsFullScreen() || QGuiApplication::styleHints()->showIsMaximized()) {
++ auto outerVerticalLayout = new QVBoxLayout(this);
++ outerVerticalLayout->addItem(new QSpacerItem(0, 0, QSizePolicy::Ignored, QSizePolicy::MinimumExpanding));
++ auto outerHorizontalLayout = new QHBoxLayout;
++ outerHorizontalLayout->addItem(new QSpacerItem(0, 0, QSizePolicy::MinimumExpanding, QSizePolicy::Ignored));
++ auto groupBox = new QGroupBox(QGuiApplication::applicationDisplayName());
++ mainLayout = new QVBoxLayout(groupBox);
++ outerHorizontalLayout->addWidget(groupBox);
++ outerHorizontalLayout->addItem(new QSpacerItem(0, 0, QSizePolicy::MinimumExpanding, QSizePolicy::Ignored));
++ outerVerticalLayout->addLayout(outerHorizontalLayout);
++ outerVerticalLayout->addItem(new QSpacerItem(0, 0, QSizePolicy::Ignored, QSizePolicy::MinimumExpanding));
++ } else {
++ mainLayout = new QVBoxLayout(this);
++ }
++
++ mainLayout->addWidget(statusLabel);
++ mainLayout->addLayout(buttonLayout);
++
++ setWindowTitle(QGuiApplication::applicationDisplayName());
++ }
++
++ void Server::initServer()
++ {
++ //! [0] //! [1]
++ tcpServer = new QTcpServer(this);
++ if (!tcpServer->listen()) {
++ QMessageBox::critical(this, tr("Fortune Server"),
++ tr("Unable to start the server: %1.")
++ .arg(tcpServer->errorString()));
++ close();
++ return;
++ }
++ //! [0]
++ QString ipAddress;
++ const QList<QHostAddress> ipAddressesList = QNetworkInterface::allAddresses();
++ // use the first non-localhost IPv4 address
++ for (const QHostAddress &entry : ipAddressesList) {
++ if (entry != QHostAddress::LocalHost && entry.toIPv4Address()) {
++ ipAddress = entry.toString();
++ break;
++ }
++ }
++ // if we did not find one, use IPv4 localhost
++ if (ipAddress.isEmpty())
++ ipAddress = QHostAddress(QHostAddress::LocalHost).toString();
++ statusLabel->setText(tr("The server is running on\n\nIP: %1\nport: %2\n\n"
++ "Run the Fortune Client example now.")
++ .arg(ipAddress).arg(tcpServer->serverPort()));
++ //! [1]
++ }
++
++ //! [4]
++ void Server::sendFortune()
++ {
++ //! [5]
++ QByteArray block;
++ QDataStream out(&block, QIODevice::WriteOnly);
++ out.setVersion(QDataStream::Qt_6_5);
++
++ out << fortunes[QRandomGenerator::global()->bounded(fortunes.size())];
++ //! [4] //! [7]
++
++ QTcpSocket *clientConnection = tcpServer->nextPendingConnection();
++ connect(clientConnection, &QAbstractSocket::disconnected,
++ clientConnection, &QObject::deleteLater);
++ //! [7] //! [8]
++
++ clientConnection->write(block);
++ clientConnection->disconnectFromHost();
++ //! [5]
++ }
++ //! [8]