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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)
{
setWindowFlags(windowFlags() & ~Qt::WindowContextHelpButtonHint);
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;
QList<QHostAddress> ipAddressesList = QNetworkInterface::allAddresses();
// use the first non-localhost IPv4 address
for (int i = 0; i < ipAddressesList.size(); ++i) {
if (ipAddressesList.at(i) != QHostAddress::LocalHost &&
ipAddressesList.at(i).toIPv4Address()) {
ipAddress = ipAddressesList.at(i).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_5_10);
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]
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