177 lines
6.7 KiB
C++
177 lines
6.7 KiB
C++
/****************************************************************************
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**
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** Copyright (C) 2012 Digia Plc and/or its subsidiary(-ies).
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** Contact: http://www.qt-project.org/legal
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**
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** This file is part of the examples of the Qt Toolkit.
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**
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** $QT_BEGIN_LICENSE:BSD$
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** You may use this file under the terms of the BSD license as follows:
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**
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** "Redistribution and use in source and binary forms, with or without
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** modification, are permitted provided that the following conditions are
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** met:
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** * Redistributions of source code must retain the above copyright
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** notice, this list of conditions and the following disclaimer.
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** * Redistributions in binary form must reproduce the above copyright
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** notice, this list of conditions and the following disclaimer in
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** the documentation and/or other materials provided with the
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** distribution.
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** * Neither the name of Digia Plc and its Subsidiary(-ies) nor the names
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** of its contributors may be used to endorse or promote products derived
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** from this software without specific prior written permission.
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**
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**
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** THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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** "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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** LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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** A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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** OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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** SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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** LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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** DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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** THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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** (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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** OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE."
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**
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** $QT_END_LICENSE$
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**
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****************************************************************************/
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#include <QtWidgets>
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#include <QtNetwork>
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#include <stdlib.h>
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#include "server.h"
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Server::Server(QWidget *parent)
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: QDialog(parent), tcpServer(0), networkSession(0)
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{
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statusLabel = new QLabel;
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quitButton = new QPushButton(tr("Quit"));
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quitButton->setAutoDefault(false);
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QNetworkConfigurationManager manager;
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if (manager.capabilities() & QNetworkConfigurationManager::NetworkSessionRequired) {
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// Get saved network configuration
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QSettings settings(QSettings::UserScope, QLatin1String("QtProject"));
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settings.beginGroup(QLatin1String("QtNetwork"));
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const QString id = settings.value(QLatin1String("DefaultNetworkConfiguration")).toString();
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settings.endGroup();
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// If the saved network configuration is not currently discovered use the system default
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QNetworkConfiguration config = manager.configurationFromIdentifier(id);
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if ((config.state() & QNetworkConfiguration::Discovered) !=
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QNetworkConfiguration::Discovered) {
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config = manager.defaultConfiguration();
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}
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networkSession = new QNetworkSession(config, this);
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connect(networkSession, SIGNAL(opened()), this, SLOT(sessionOpened()));
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statusLabel->setText(tr("Opening network session."));
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networkSession->open();
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} else {
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sessionOpened();
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}
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//! [2]
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fortunes << tr("You've been leading a dog's life. Stay off the furniture.")
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<< tr("You've got to think about tomorrow.")
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<< tr("You will be surprised by a loud noise.")
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<< tr("You will feel hungry again in another hour.")
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<< tr("You might have mail.")
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<< tr("You cannot kill time without injuring eternity.")
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<< tr("Computers are not intelligent. They only think they are.");
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//! [2]
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connect(quitButton, SIGNAL(clicked()), this, SLOT(close()));
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//! [3]
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connect(tcpServer, SIGNAL(newConnection()), this, SLOT(sendFortune()));
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//! [3]
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QHBoxLayout *buttonLayout = new QHBoxLayout;
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buttonLayout->addStretch(1);
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buttonLayout->addWidget(quitButton);
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buttonLayout->addStretch(1);
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QVBoxLayout *mainLayout = new QVBoxLayout;
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mainLayout->addWidget(statusLabel);
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mainLayout->addLayout(buttonLayout);
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setLayout(mainLayout);
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setWindowTitle(tr("Fortune Server"));
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}
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void Server::sessionOpened()
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{
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// Save the used configuration
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if (networkSession) {
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QNetworkConfiguration config = networkSession->configuration();
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QString id;
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if (config.type() == QNetworkConfiguration::UserChoice)
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id = networkSession->sessionProperty(QLatin1String("UserChoiceConfiguration")).toString();
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else
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id = config.identifier();
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QSettings settings(QSettings::UserScope, QLatin1String("QtProject"));
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settings.beginGroup(QLatin1String("QtNetwork"));
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settings.setValue(QLatin1String("DefaultNetworkConfiguration"), id);
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settings.endGroup();
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}
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//! [0] //! [1]
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tcpServer = new QTcpServer(this);
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if (!tcpServer->listen()) {
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QMessageBox::critical(this, tr("Fortune Server"),
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tr("Unable to start the server: %1.")
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.arg(tcpServer->errorString()));
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close();
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return;
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}
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//! [0]
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QString ipAddress;
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QList<QHostAddress> ipAddressesList = QNetworkInterface::allAddresses();
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// use the first non-localhost IPv4 address
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for (int i = 0; i < ipAddressesList.size(); ++i) {
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if (ipAddressesList.at(i) != QHostAddress::LocalHost &&
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ipAddressesList.at(i).toIPv4Address()) {
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ipAddress = ipAddressesList.at(i).toString();
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break;
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}
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}
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// if we did not find one, use IPv4 localhost
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if (ipAddress.isEmpty())
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ipAddress = QHostAddress(QHostAddress::LocalHost).toString();
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statusLabel->setText(tr("The server is running on\n\nIP: %1\nport: %2\n\n"
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"Run the Fortune Client example now.")
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.arg(ipAddress).arg(tcpServer->serverPort()));
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//! [1]
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}
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//! [4]
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void Server::sendFortune()
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{
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//! [5]
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QByteArray block;
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QDataStream out(&block, QIODevice::WriteOnly);
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out.setVersion(QDataStream::Qt_4_0);
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//! [4] //! [6]
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out << (quint16)0;
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out << fortunes.at(qrand() % fortunes.size());
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out.device()->seek(0);
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out << (quint16)(block.size() - sizeof(quint16));
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//! [6] //! [7]
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QTcpSocket *clientConnection = tcpServer->nextPendingConnection();
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connect(clientConnection, SIGNAL(disconnected()),
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clientConnection, SLOT(deleteLater()));
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//! [7] //! [8]
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clientConnection->write(block);
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clientConnection->disconnectFromHost();
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//! [5]
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}
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//! [8]
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