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50
51#include <QtWidgets>
52#include <QtNetwork>
53#include <QtCore>
54
55#include "server.h"
56
57Server::Server(QWidget *parent)
58 : QDialog(parent)
59 , statusLabel(new QLabel)
60{
61 setWindowFlags(windowFlags() & ~Qt::WindowContextHelpButtonHint);
62 statusLabel->setTextInteractionFlags(Qt::TextBrowserInteraction);
63
64 initServer();
65
66 //! [2]
67 fortunes << tr("You've been leading a dog's life. Stay off the furniture.")
68 << tr("You've got to think about tomorrow.")
69 << tr("You will be surprised by a loud noise.")
70 << tr("You will feel hungry again in another hour.")
71 << tr("You might have mail.")
72 << tr("You cannot kill time without injuring eternity.")
73 << tr("Computers are not intelligent. They only think they are.");
74 //! [2]
75 auto quitButton = new QPushButton(tr("Quit"));
76 quitButton->setAutoDefault(false);
77 connect(quitButton, &QAbstractButton::clicked, this, &QWidget::close);
78 //! [3]
79 connect(tcpServer, &QTcpServer::newConnection, this, &Server::sendFortune);
80 //! [3]
81
82 auto buttonLayout = new QHBoxLayout;
83 buttonLayout->addStretch(1);
84 buttonLayout->addWidget(quitButton);
85 buttonLayout->addStretch(1);
86
87 QVBoxLayout *mainLayout = nullptr;
88 if (QGuiApplication::styleHints()->showIsFullScreen() || QGuiApplication::styleHints()->showIsMaximized()) {
89 auto outerVerticalLayout = new QVBoxLayout(this);
90 outerVerticalLayout->addItem(new QSpacerItem(0, 0, QSizePolicy::Ignored, QSizePolicy::MinimumExpanding));
91 auto outerHorizontalLayout = new QHBoxLayout;
92 outerHorizontalLayout->addItem(new QSpacerItem(0, 0, QSizePolicy::MinimumExpanding, QSizePolicy::Ignored));
93 auto groupBox = new QGroupBox(QGuiApplication::applicationDisplayName());
94 mainLayout = new QVBoxLayout(groupBox);
95 outerHorizontalLayout->addWidget(groupBox);
96 outerHorizontalLayout->addItem(new QSpacerItem(0, 0, QSizePolicy::MinimumExpanding, QSizePolicy::Ignored));
97 outerVerticalLayout->addLayout(outerHorizontalLayout);
98 outerVerticalLayout->addItem(new QSpacerItem(0, 0, QSizePolicy::Ignored, QSizePolicy::MinimumExpanding));
99 } else {
100 mainLayout = new QVBoxLayout(this);
101 }
102
103 mainLayout->addWidget(statusLabel);
104 mainLayout->addLayout(buttonLayout);
105
106 setWindowTitle(QGuiApplication::applicationDisplayName());
107}
108
109void Server::initServer()
110{
111//! [0] //! [1]
112 tcpServer = new QTcpServer(this);
113 if (!tcpServer->listen()) {
114 QMessageBox::critical(this, tr("Fortune Server"),
115 tr("Unable to start the server: %1.")
116 .arg(tcpServer->errorString()));
117 close();
118 return;
119 }
120//! [0]
121 QString ipAddress;
122 QList<QHostAddress> ipAddressesList = QNetworkInterface::allAddresses();
123 // use the first non-localhost IPv4 address
124 for (int i = 0; i < ipAddressesList.size(); ++i) {
125 if (ipAddressesList.at(i) != QHostAddress::LocalHost &&
126 ipAddressesList.at(i).toIPv4Address()) {
127 ipAddress = ipAddressesList.at(i).toString();
128 break;
129 }
130 }
131 // if we did not find one, use IPv4 localhost
132 if (ipAddress.isEmpty())
133 ipAddress = QHostAddress(QHostAddress::LocalHost).toString();
134 statusLabel->setText(tr("The server is running on\n\nIP: %1\nport: %2\n\n"
135 "Run the Fortune Client example now.")
136 .arg(ipAddress).arg(tcpServer->serverPort()));
137//! [1]
138}
139
140//! [4]
141void Server::sendFortune()
142{
143//! [5]
144 QByteArray block;
145 QDataStream out(&block, QIODevice::WriteOnly);
146 out.setVersion(QDataStream::Qt_5_10);
147
148 out << fortunes[QRandomGenerator::global()->bounded(int(fortunes.size()))];
149//! [4] //! [7]
150
151 QTcpSocket *clientConnection = tcpServer->nextPendingConnection();
152 connect(clientConnection, &QAbstractSocket::disconnected,
153 clientConnection, &QObject::deleteLater);
154//! [7] //! [8]
155
156 clientConnection->write(block);
157 clientConnection->disconnectFromHost();
158//! [5]
159}
160//! [8]
161