| 1 | /****************************************************************************
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| 2 | **
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| 3 | ** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).
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| 4 | ** Contact: Qt Software Information ([email protected])
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| 5 | **
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| 6 | ** This file is part of the examples of the Qt Toolkit.
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| 7 | **
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| 8 | ** $QT_BEGIN_LICENSE:LGPL$
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| 9 | ** Commercial Usage
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| 10 | ** Licensees holding valid Qt Commercial licenses may use this file in
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| 11 | ** accordance with the Qt Commercial License Agreement provided with the
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| 12 | ** Software or, alternatively, in accordance with the terms contained in
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| 13 | ** a written agreement between you and Nokia.
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| 14 | **
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| 15 | ** GNU Lesser General Public License Usage
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| 16 | ** Alternatively, this file may be used under the terms of the GNU Lesser
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| 17 | ** General Public License version 2.1 as published by the Free Software
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| 18 | ** Foundation and appearing in the file LICENSE.LGPL included in the
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| 19 | ** packaging of this file. Please review the following information to
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| 20 | ** ensure the GNU Lesser General Public License version 2.1 requirements
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| 21 | ** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
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| 22 | **
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| 23 | ** In addition, as a special exception, Nokia gives you certain
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| 24 | ** additional rights. These rights are described in the Nokia Qt LGPL
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| 25 | ** Exception version 1.0, included in the file LGPL_EXCEPTION.txt in this
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| 26 | ** package.
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| 27 | **
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| 28 | ** GNU General Public License Usage
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| 29 | ** Alternatively, this file may be used under the terms of the GNU
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| 30 | ** General Public License version 3.0 as published by the Free Software
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| 31 | ** Foundation and appearing in the file LICENSE.GPL included in the
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| 32 | ** packaging of this file. Please review the following information to
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| 33 | ** ensure the GNU General Public License version 3.0 requirements will be
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| 34 | ** met: http://www.gnu.org/copyleft/gpl.html.
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| 35 | **
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| 36 | ** If you are unsure which license is appropriate for your use, please
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| 37 | ** contact the sales department at [email protected].
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| 38 | ** $QT_END_LICENSE$
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| 39 | **
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| 40 | ****************************************************************************/
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| 41 |
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| 42 | #include <QtGui>
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| 43 | #include <QtNetwork>
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| 44 |
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| 45 | #include <stdlib.h>
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| 46 |
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| 47 | #include "server.h"
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| 48 |
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| 49 | Server::Server(QWidget *parent)
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| 50 | : QDialog(parent)
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| 51 | {
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| 52 | statusLabel = new QLabel;
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| 53 | quitButton = new QPushButton(tr("Quit"));
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| 54 | quitButton->setAutoDefault(false);
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| 55 |
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| 56 | //! [0] //! [1]
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| 57 | tcpServer = new QTcpServer(this);
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| 58 | if (!tcpServer->listen()) {
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| 59 | QMessageBox::critical(this, tr("Fortune Server"),
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| 60 | tr("Unable to start the server: %1.")
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| 61 | .arg(tcpServer->errorString()));
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| 62 | close();
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| 63 | return;
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| 64 | }
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| 65 | //! [0]
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| 66 |
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| 67 | statusLabel->setText(tr("The server is running on port %1.\n"
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| 68 | "Run the Fortune Client example now.")
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| 69 | .arg(tcpServer->serverPort()));
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| 70 | //! [1]
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| 71 |
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| 72 | //! [2]
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| 73 | fortunes << tr("You've been leading a dog's life. Stay off the furniture.")
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| 74 | << tr("You've got to think about tomorrow.")
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| 75 | << tr("You will be surprised by a loud noise.")
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| 76 | << tr("You will feel hungry again in another hour.")
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| 77 | << tr("You might have mail.")
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| 78 | << tr("You cannot kill time without injuring eternity.")
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| 79 | << tr("Computers are not intelligent. They only think they are.");
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| 80 | //! [2]
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| 81 |
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| 82 | connect(quitButton, SIGNAL(clicked()), this, SLOT(close()));
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| 83 | //! [3]
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| 84 | connect(tcpServer, SIGNAL(newConnection()), this, SLOT(sendFortune()));
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| 85 | //! [3]
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| 86 |
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| 87 | QHBoxLayout *buttonLayout = new QHBoxLayout;
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| 88 | buttonLayout->addStretch(1);
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| 89 | buttonLayout->addWidget(quitButton);
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| 90 | buttonLayout->addStretch(1);
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| 91 |
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| 92 | QVBoxLayout *mainLayout = new QVBoxLayout;
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| 93 | mainLayout->addWidget(statusLabel);
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| 94 | mainLayout->addLayout(buttonLayout);
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| 95 | setLayout(mainLayout);
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| 96 |
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| 97 | setWindowTitle(tr("Fortune Server"));
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| 98 | }
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| 99 |
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| 100 | //! [4]
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| 101 | void Server::sendFortune()
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| 102 | {
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| 103 | //! [5]
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| 104 | QByteArray block;
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| 105 | QDataStream out(&block, QIODevice::WriteOnly);
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| 106 | out.setVersion(QDataStream::Qt_4_0);
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| 107 | //! [4] //! [6]
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| 108 | out << (quint16)0;
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| 109 | out << fortunes.at(qrand() % fortunes.size());
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| 110 | out.device()->seek(0);
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| 111 | out << (quint16)(block.size() - sizeof(quint16));
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| 112 | //! [6] //! [7]
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| 113 |
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| 114 | QTcpSocket *clientConnection = tcpServer->nextPendingConnection();
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| 115 | connect(clientConnection, SIGNAL(disconnected()),
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| 116 | clientConnection, SLOT(deleteLater()));
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| 117 | //! [7] //! [8]
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| 118 |
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| 119 | clientConnection->write(block);
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| 120 | clientConnection->disconnectFromHost();
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| 121 | //! [5]
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| 122 | }
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| 123 | //! [8]
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