Home | All Classes | Main Classes | Annotated | Grouped Classes | Functions

server.cpp Example File
network/fortuneserver/server.cpp

    #include <QtGui>
    #include <QtNetwork>

    #include <stdlib.h>

    #include "server.h"

    using namespace std;

    Server::Server(QWidget *parent)
        : QDialog(parent)
    {
        statusLabel = new QLabel(this);
        quitButton = new QPushButton(tr("Quit"), this);
        quitButton->setAutoDefault(false);

        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;
        }

        statusLabel->setText(tr("The server is running on port %1.\n"
                                "Run the Fortune Client example now.")
                             .arg(tcpServer->serverPort()));

        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.");

        connect(quitButton, SIGNAL(clicked()), this, SLOT(close()));
        connect(tcpServer, SIGNAL(newConnection()), this, SLOT(sendFortune()));

        QHBoxLayout *buttonLayout = new QHBoxLayout;
        buttonLayout->addStretch(1);
        buttonLayout->addWidget(quitButton);

        QVBoxLayout *mainLayout = new QVBoxLayout(this);
        mainLayout->addWidget(statusLabel);
        mainLayout->addLayout(buttonLayout);

        setWindowTitle(tr("Fortune Server"));
    }

    void Server::sendFortune()
    {
        QByteArray block;
        QDataStream out(&block, QIODevice::WriteOnly);
        out.setVersion(QDataStream::Qt_4_0);
        out << (Q_UINT16)0;
        out << fortunes.at(rand() % fortunes.size());
        out.device()->seek(0);
        out << (Q_UINT16)(block.size() - sizeof(Q_UINT16));

        QTcpSocket *clientConnection = tcpServer->nextPendingConnection();
        connect(clientConnection, SIGNAL(closed()),
                clientConnection, SLOT(deleteLater()));

        clientConnection->write(block);
        clientConnection->close();
    }