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Diffstat (limited to 'examples/network/fortuneserver/server.cpp')
-rw-r--r-- | examples/network/fortuneserver/server.cpp | 176 |
1 files changed, 176 insertions, 0 deletions
diff --git a/examples/network/fortuneserver/server.cpp b/examples/network/fortuneserver/server.cpp new file mode 100644 index 0000000000..edb8c9398c --- /dev/null +++ b/examples/network/fortuneserver/server.cpp @@ -0,0 +1,176 @@ +/**************************************************************************** +** +** Copyright (C) 2011 Nokia Corporation and/or its subsidiary(-ies). +** All rights reserved. +** Contact: Nokia Corporation (qt-info@nokia.com) +** +** This file is part of the examples of the Qt Toolkit. +** +** $QT_BEGIN_LICENSE:BSD$ +** You may use this file under the terms of the BSD license as follows: +** +** "Redistribution and use in source and binary forms, with or without +** modification, are permitted provided that the following conditions are +** met: +** * Redistributions of source code must retain the above copyright +** notice, this list of conditions and the following disclaimer. +** * Redistributions in binary form must reproduce the above copyright +** notice, this list of conditions and the following disclaimer in +** the documentation and/or other materials provided with the +** distribution. +** * Neither the name of Nokia Corporation and its Subsidiary(-ies) nor +** the names of its contributors may be used to endorse or promote +** products derived from this software without specific prior written +** permission. +** +** THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS +** "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT +** LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR +** A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT +** OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, +** SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT +** LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, +** DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY +** THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT +** (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE +** OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE." +** $QT_END_LICENSE$ +** +****************************************************************************/ + +#include <QtGui> +#include <QtNetwork> + +#include <stdlib.h> + +#include "server.h" + +Server::Server(QWidget *parent) +: QDialog(parent), tcpServer(0), networkSession(0) +{ + statusLabel = new QLabel; + quitButton = new QPushButton(tr("Quit")); + quitButton->setAutoDefault(false); + + QNetworkConfigurationManager manager; + if (manager.capabilities() & QNetworkConfigurationManager::NetworkSessionRequired) { + // Get saved network configuration + QSettings settings(QSettings::UserScope, QLatin1String("Trolltech")); + settings.beginGroup(QLatin1String("QtNetwork")); + const QString id = settings.value(QLatin1String("DefaultNetworkConfiguration")).toString(); + settings.endGroup(); + + // If the saved network configuration is not currently discovered use the system default + QNetworkConfiguration config = manager.configurationFromIdentifier(id); + if ((config.state() & QNetworkConfiguration::Discovered) != + QNetworkConfiguration::Discovered) { + config = manager.defaultConfiguration(); + } + + networkSession = new QNetworkSession(config, this); + connect(networkSession, SIGNAL(opened()), this, SLOT(sessionOpened())); + + statusLabel->setText(tr("Opening network session.")); + networkSession->open(); + } else { + sessionOpened(); + } + + //! [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] + + connect(quitButton, SIGNAL(clicked()), this, SLOT(close())); + //! [3] + connect(tcpServer, SIGNAL(newConnection()), this, SLOT(sendFortune())); + //! [3] + + QHBoxLayout *buttonLayout = new QHBoxLayout; + buttonLayout->addStretch(1); + buttonLayout->addWidget(quitButton); + buttonLayout->addStretch(1); + + QVBoxLayout *mainLayout = new QVBoxLayout; + mainLayout->addWidget(statusLabel); + mainLayout->addLayout(buttonLayout); + setLayout(mainLayout); + + setWindowTitle(tr("Fortune Server")); +} + +void Server::sessionOpened() +{ + // Save the used configuration + if (networkSession) { + QNetworkConfiguration config = networkSession->configuration(); + QString id; + if (config.type() == QNetworkConfiguration::UserChoice) + id = networkSession->sessionProperty(QLatin1String("UserChoiceConfiguration")).toString(); + else + id = config.identifier(); + + QSettings settings(QSettings::UserScope, QLatin1String("Trolltech")); + settings.beginGroup(QLatin1String("QtNetwork")); + settings.setValue(QLatin1String("DefaultNetworkConfiguration"), id); + settings.endGroup(); + } + +//! [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_4_0); +//! [4] //! [6] + out << (quint16)0; + out << fortunes.at(qrand() % fortunes.size()); + out.device()->seek(0); + out << (quint16)(block.size() - sizeof(quint16)); +//! [6] //! [7] + + QTcpSocket *clientConnection = tcpServer->nextPendingConnection(); + connect(clientConnection, SIGNAL(disconnected()), + clientConnection, SLOT(deleteLater())); +//! [7] //! [8] + + clientConnection->write(block); + clientConnection->disconnectFromHost(); +//! [5] +} +//! [8] |