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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 ** All rights reserved. |
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5 ** Contact: Nokia Corporation (qt-info@nokia.com) |
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6 ** |
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7 ** This file is part of the examples of the Qt Toolkit. |
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8 ** |
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9 ** $QT_BEGIN_LICENSE:LGPL$ |
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10 ** No Commercial Usage |
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11 ** This file contains pre-release code and may not be distributed. |
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12 ** You may use this file in accordance with the terms and conditions |
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13 ** contained in the Technology Preview License Agreement accompanying |
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14 ** this package. |
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15 ** |
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16 ** GNU Lesser General Public License Usage |
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17 ** Alternatively, this file may be used under the terms of the GNU Lesser |
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18 ** General Public License version 2.1 as published by the Free Software |
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19 ** Foundation and appearing in the file LICENSE.LGPL included in the |
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20 ** packaging of this file. Please review the following information to |
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21 ** ensure the GNU Lesser General Public License version 2.1 requirements |
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22 ** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html. |
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23 ** |
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24 ** In addition, as a special exception, Nokia gives you certain additional |
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25 ** rights. These rights are described in the Nokia Qt LGPL Exception |
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26 ** version 1.1, included in the file LGPL_EXCEPTION.txt in this package. |
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27 ** |
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28 ** If you have questions regarding the use of this file, please contact |
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29 ** Nokia at qt-info@nokia.com. |
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30 ** |
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31 ** |
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32 ** |
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33 ** |
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34 ** |
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35 ** |
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36 ** |
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37 ** |
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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 QString ipAddress; |
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67 QList<QHostAddress> ipAddressesList = QNetworkInterface::allAddresses(); |
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68 // use the first non-localhost IPv4 address |
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69 for (int i = 0; i < ipAddressesList.size(); ++i) { |
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70 if (ipAddressesList.at(i) != QHostAddress::LocalHost && |
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71 ipAddressesList.at(i).toIPv4Address()) |
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72 ipAddress = ipAddressesList.at(i).toString(); |
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73 } |
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74 // if we did not find one, use IPv4 localhost |
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75 if (ipAddress.isEmpty()) |
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76 ipAddress = QHostAddress(QHostAddress::LocalHost).toString(); |
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77 statusLabel->setText(tr("The server is running on\n\nIP: %1\nport: %2\n\n" |
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78 "Run the Fortune Client example now.") |
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79 .arg(ipAddress).arg(tcpServer->serverPort())); |
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80 //! [1] |
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81 |
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82 //! [2] |
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83 fortunes << tr("You've been leading a dog's life. Stay off the furniture.") |
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84 << tr("You've got to think about tomorrow.") |
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85 << tr("You will be surprised by a loud noise.") |
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86 << tr("You will feel hungry again in another hour.") |
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87 << tr("You might have mail.") |
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88 << tr("You cannot kill time without injuring eternity.") |
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89 << tr("Computers are not intelligent. They only think they are."); |
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90 //! [2] |
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91 |
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92 connect(quitButton, SIGNAL(clicked()), this, SLOT(close())); |
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93 //! [3] |
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94 connect(tcpServer, SIGNAL(newConnection()), this, SLOT(sendFortune())); |
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95 //! [3] |
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96 |
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97 QHBoxLayout *buttonLayout = new QHBoxLayout; |
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98 buttonLayout->addStretch(1); |
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99 buttonLayout->addWidget(quitButton); |
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100 buttonLayout->addStretch(1); |
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101 |
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102 QVBoxLayout *mainLayout = new QVBoxLayout; |
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103 mainLayout->addWidget(statusLabel); |
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104 mainLayout->addLayout(buttonLayout); |
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105 setLayout(mainLayout); |
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106 |
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107 setWindowTitle(tr("Fortune Server")); |
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108 } |
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109 |
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110 //! [4] |
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111 void Server::sendFortune() |
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112 { |
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113 //! [5] |
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114 QByteArray block; |
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115 QDataStream out(&block, QIODevice::WriteOnly); |
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116 out.setVersion(QDataStream::Qt_4_0); |
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117 //! [4] //! [6] |
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118 out << (quint16)0; |
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119 out << fortunes.at(qrand() % fortunes.size()); |
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120 out.device()->seek(0); |
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121 out << (quint16)(block.size() - sizeof(quint16)); |
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122 //! [6] //! [7] |
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123 |
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124 QTcpSocket *clientConnection = tcpServer->nextPendingConnection(); |
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125 connect(clientConnection, SIGNAL(disconnected()), |
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126 clientConnection, SLOT(deleteLater())); |
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127 //! [7] //! [8] |
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128 |
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129 clientConnection->write(block); |
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130 clientConnection->disconnectFromHost(); |
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131 //! [5] |
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132 } |
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133 //! [8] |