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

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

        /****************************************************************************
        **
        ** Copyright (C) 2004-2005 Trolltech AS. All rights reserved.
        **
        ** This file is part of the documentation of the Qt Toolkit.
        **
        ** This file may be distributed under the terms of the Q Public License
    ** as defined by Trolltech AS of Norway and appearing in the file
    ** LICENSE.QPL included in the packaging of this file.
    **
    ** This file may be distributed and/or modified under the terms of the
    ** GNU General Public License version 2 as published by the Free Software
    ** Foundation and appearing in the file LICENSE.GPL included in the
    ** packaging of this file.
    **
    ** See http://www.trolltech.com/pricing.html or email sales@trolltech.com for
    **   information about Qt Commercial License Agreements.
    ** See http://www.trolltech.com/qpl/ for QPL licensing information.
    ** See http://www.trolltech.com/gpl/ for GPL licensing information.
    **
    ** Contact info@trolltech.com if any conditions of this licensing are
    ** not clear to you.
        **
        ** This file is provided AS IS with NO WARRANTY OF ANY KIND, INCLUDING THE
        ** WARRANTY OF DESIGN, MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
        **
        ****************************************************************************/

        #include <QtGui>
        #include <QtNetwork>

        #include <stdlib.h>

        #include "server.h"

        Server::Server(QWidget *parent)
            : QDialog(parent)
        {
            statusLabel = new QLabel;
            quitButton = new QPushButton(tr("Quit"));
            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;
            mainLayout->addWidget(statusLabel);
            mainLayout->addLayout(buttonLayout);
            setLayout(mainLayout);

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

        void Server::sendFortune()
        {
            QByteArray block;
            QDataStream out(&block, QIODevice::WriteOnly);
            out.setVersion(QDataStream::Qt_4_0);
            out << (quint16)0;
            out << fortunes.at(rand() % fortunes.size());
            out.device()->seek(0);
            out << (quint16)(block.size() - sizeof(quint16));

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

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