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Diffstat (limited to 'examples/network/fortuneserver/server.cpp')
| -rw-r--r-- | examples/network/fortuneserver/server.cpp | 123 |
1 files changed, 123 insertions, 0 deletions
diff --git a/examples/network/fortuneserver/server.cpp b/examples/network/fortuneserver/server.cpp new file mode 100644 index 0000000..09626a8 --- /dev/null +++ b/examples/network/fortuneserver/server.cpp @@ -0,0 +1,123 @@ +/**************************************************************************** +** +** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies). +** Contact: Qt Software Information (qt-info@nokia.com) +** +** This file is part of the examples of the Qt Toolkit. +** +** $QT_BEGIN_LICENSE:LGPL$ +** No Commercial Usage +** This file contains pre-release code and may not be distributed. +** You may use this file in accordance with the terms and conditions +** contained in the either Technology Preview License Agreement or the +** Beta Release License Agreement. +** +** GNU Lesser General Public License Usage +** Alternatively, this file may be used under the terms of the GNU Lesser +** General Public License version 2.1 as published by the Free Software +** Foundation and appearing in the file LICENSE.LGPL included in the +** packaging of this file. Please review the following information to +** ensure the GNU Lesser General Public License version 2.1 requirements +** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html. +** +** In addition, as a special exception, Nokia gives you certain +** additional rights. These rights are described in the Nokia Qt LGPL +** Exception version 1.0, included in the file LGPL_EXCEPTION.txt in this +** package. +** +** GNU General Public License Usage +** Alternatively, this file may be used under the terms of the GNU +** General Public License version 3.0 as published by the Free Software +** Foundation and appearing in the file LICENSE.GPL included in the +** packaging of this file. Please review the following information to +** ensure the GNU General Public License version 3.0 requirements will be +** met: http://www.gnu.org/copyleft/gpl.html. +** +** If you are unsure which license is appropriate for your use, please +** contact the sales department at qt-sales@nokia.com. +** $QT_END_LICENSE$ +** +****************************************************************************/ + +#include <QtGui> +#include <QtNetwork> + +#include <stdlib.h> + +#include "server.h" + +Server::Server(QWidget *parent) + : QDialog(parent) +{ + statusLabel = new QLabel; + quitButton = new QPushButton(tr("Quit")); + quitButton->setAutoDefault(false); + +//! [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] + + statusLabel->setText(tr("The server is running on port %1.\n" + "Run the Fortune Client example now.") + .arg(tcpServer->serverPort())); +//! [1] + +//! [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")); +} + +//! [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] |