server.cpp Example File

ipc/localfortuneserver/server.cpp
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#include <QtWidgets> #include <QtNetwork> #include <stdlib.h> #include "server.h" #include <qlocalserver.h> #include <qlocalsocket.h> Server::Server(QWidget *parent) : QDialog(parent) { setWindowFlags(windowFlags() & ~Qt::WindowContextHelpButtonHint); server = new QLocalServer(this); if (!server->listen("fortune")) { QMessageBox::critical(this, tr("Local Fortune Server"), tr("Unable to start the server: %1.") .arg(server->errorString())); close(); return; } QLabel *statusLabel = new QLabel; statusLabel->setWordWrap(true); statusLabel->setText(tr("The server is running.\n" "Run the Local Fortune Client example now.")); 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."); QPushButton *quitButton = new QPushButton(tr("Quit")); quitButton->setAutoDefault(false); connect(quitButton, &QPushButton::clicked, this, &Server::close); connect(server, &QLocalServer::newConnection, this, &Server::sendFortune); QHBoxLayout *buttonLayout = new QHBoxLayout; buttonLayout->addStretch(1); buttonLayout->addWidget(quitButton); buttonLayout->addStretch(1); QVBoxLayout *mainLayout = new QVBoxLayout(this); mainLayout->addWidget(statusLabel); mainLayout->addLayout(buttonLayout); setWindowTitle(QGuiApplication::applicationDisplayName()); } void Server::sendFortune() { QByteArray block; QDataStream out(&block, QIODevice::WriteOnly); out.setVersion(QDataStream::Qt_5_10); const int fortuneIndex = QRandomGenerator::global()->bounded(0, fortunes.size()); const QString &message = fortunes.at(fortuneIndex); out << quint32(message.size()); out << message; QLocalSocket *clientConnection = server->nextPendingConnection(); connect(clientConnection, &QLocalSocket::disconnected, clientConnection, &QLocalSocket::deleteLater); clientConnection->write(block); clientConnection->flush(); clientConnection->disconnectFromServer(); }