examples/ipc/localfortuneserver/server.cpp
author Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
Mon, 04 Oct 2010 01:19:32 +0300
changeset 37 758a864f9613
parent 30 5dc02b23752f
permissions -rw-r--r--
Revision: 201037 Kit: 201039
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
0
1918ee327afb Revision: 200952
Alex Gilkes <alex.gilkes@nokia.com>
parents:
diff changeset
     1
/****************************************************************************
1918ee327afb Revision: 200952
Alex Gilkes <alex.gilkes@nokia.com>
parents:
diff changeset
     2
**
18
2f34d5167611 Revision: 201011
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents: 0
diff changeset
     3
** Copyright (C) 2010 Nokia Corporation and/or its subsidiary(-ies).
0
1918ee327afb Revision: 200952
Alex Gilkes <alex.gilkes@nokia.com>
parents:
diff changeset
     4
** All rights reserved.
1918ee327afb Revision: 200952
Alex Gilkes <alex.gilkes@nokia.com>
parents:
diff changeset
     5
** Contact: Nokia Corporation (qt-info@nokia.com)
1918ee327afb Revision: 200952
Alex Gilkes <alex.gilkes@nokia.com>
parents:
diff changeset
     6
**
1918ee327afb Revision: 200952
Alex Gilkes <alex.gilkes@nokia.com>
parents:
diff changeset
     7
** This file is part of the examples of the Qt Toolkit.
1918ee327afb Revision: 200952
Alex Gilkes <alex.gilkes@nokia.com>
parents:
diff changeset
     8
**
30
5dc02b23752f Revision: 201025
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents: 18
diff changeset
     9
** $QT_BEGIN_LICENSE:BSD$
5dc02b23752f Revision: 201025
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents: 18
diff changeset
    10
** You may use this file under the terms of the BSD license as follows:
0
1918ee327afb Revision: 200952
Alex Gilkes <alex.gilkes@nokia.com>
parents:
diff changeset
    11
**
30
5dc02b23752f Revision: 201025
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents: 18
diff changeset
    12
** "Redistribution and use in source and binary forms, with or without
5dc02b23752f Revision: 201025
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents: 18
diff changeset
    13
** modification, are permitted provided that the following conditions are
5dc02b23752f Revision: 201025
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents: 18
diff changeset
    14
** met:
5dc02b23752f Revision: 201025
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents: 18
diff changeset
    15
**   * Redistributions of source code must retain the above copyright
5dc02b23752f Revision: 201025
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents: 18
diff changeset
    16
**     notice, this list of conditions and the following disclaimer.
5dc02b23752f Revision: 201025
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents: 18
diff changeset
    17
**   * Redistributions in binary form must reproduce the above copyright
5dc02b23752f Revision: 201025
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents: 18
diff changeset
    18
**     notice, this list of conditions and the following disclaimer in
5dc02b23752f Revision: 201025
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents: 18
diff changeset
    19
**     the documentation and/or other materials provided with the
5dc02b23752f Revision: 201025
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents: 18
diff changeset
    20
**     distribution.
5dc02b23752f Revision: 201025
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents: 18
diff changeset
    21
**   * Neither the name of Nokia Corporation and its Subsidiary(-ies) nor
5dc02b23752f Revision: 201025
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents: 18
diff changeset
    22
**     the names of its contributors may be used to endorse or promote
5dc02b23752f Revision: 201025
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents: 18
diff changeset
    23
**     products derived from this software without specific prior written
5dc02b23752f Revision: 201025
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents: 18
diff changeset
    24
**     permission.
0
1918ee327afb Revision: 200952
Alex Gilkes <alex.gilkes@nokia.com>
parents:
diff changeset
    25
**
30
5dc02b23752f Revision: 201025
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents: 18
diff changeset
    26
** THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
5dc02b23752f Revision: 201025
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents: 18
diff changeset
    27
** "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
5dc02b23752f Revision: 201025
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents: 18
diff changeset
    28
** LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
5dc02b23752f Revision: 201025
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents: 18
diff changeset
    29
** A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
5dc02b23752f Revision: 201025
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents: 18
diff changeset
    30
** OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
5dc02b23752f Revision: 201025
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents: 18
diff changeset
    31
** SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
5dc02b23752f Revision: 201025
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents: 18
diff changeset
    32
** LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
5dc02b23752f Revision: 201025
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents: 18
diff changeset
    33
** DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
5dc02b23752f Revision: 201025
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents: 18
diff changeset
    34
** THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
5dc02b23752f Revision: 201025
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents: 18
diff changeset
    35
** (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
5dc02b23752f Revision: 201025
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents: 18
diff changeset
    36
** OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE."
0
1918ee327afb Revision: 200952
Alex Gilkes <alex.gilkes@nokia.com>
parents:
diff changeset
    37
** $QT_END_LICENSE$
1918ee327afb Revision: 200952
Alex Gilkes <alex.gilkes@nokia.com>
parents:
diff changeset
    38
**
1918ee327afb Revision: 200952
Alex Gilkes <alex.gilkes@nokia.com>
parents:
diff changeset
    39
****************************************************************************/
1918ee327afb Revision: 200952
Alex Gilkes <alex.gilkes@nokia.com>
parents:
diff changeset
    40
1918ee327afb Revision: 200952
Alex Gilkes <alex.gilkes@nokia.com>
parents:
diff changeset
    41
#include <QtGui>
1918ee327afb Revision: 200952
Alex Gilkes <alex.gilkes@nokia.com>
parents:
diff changeset
    42
#include <QtNetwork>
1918ee327afb Revision: 200952
Alex Gilkes <alex.gilkes@nokia.com>
parents:
diff changeset
    43
1918ee327afb Revision: 200952
Alex Gilkes <alex.gilkes@nokia.com>
parents:
diff changeset
    44
#include <stdlib.h>
1918ee327afb Revision: 200952
Alex Gilkes <alex.gilkes@nokia.com>
parents:
diff changeset
    45
1918ee327afb Revision: 200952
Alex Gilkes <alex.gilkes@nokia.com>
parents:
diff changeset
    46
#include "server.h"
1918ee327afb Revision: 200952
Alex Gilkes <alex.gilkes@nokia.com>
parents:
diff changeset
    47
#include <qlocalserver.h>
1918ee327afb Revision: 200952
Alex Gilkes <alex.gilkes@nokia.com>
parents:
diff changeset
    48
#include <qlocalsocket.h>
1918ee327afb Revision: 200952
Alex Gilkes <alex.gilkes@nokia.com>
parents:
diff changeset
    49
1918ee327afb Revision: 200952
Alex Gilkes <alex.gilkes@nokia.com>
parents:
diff changeset
    50
Server::Server(QWidget *parent)
1918ee327afb Revision: 200952
Alex Gilkes <alex.gilkes@nokia.com>
parents:
diff changeset
    51
    : QDialog(parent)
1918ee327afb Revision: 200952
Alex Gilkes <alex.gilkes@nokia.com>
parents:
diff changeset
    52
{
1918ee327afb Revision: 200952
Alex Gilkes <alex.gilkes@nokia.com>
parents:
diff changeset
    53
    statusLabel = new QLabel;
1918ee327afb Revision: 200952
Alex Gilkes <alex.gilkes@nokia.com>
parents:
diff changeset
    54
    quitButton = new QPushButton(tr("Quit"));
1918ee327afb Revision: 200952
Alex Gilkes <alex.gilkes@nokia.com>
parents:
diff changeset
    55
    quitButton->setAutoDefault(false);
1918ee327afb Revision: 200952
Alex Gilkes <alex.gilkes@nokia.com>
parents:
diff changeset
    56
1918ee327afb Revision: 200952
Alex Gilkes <alex.gilkes@nokia.com>
parents:
diff changeset
    57
    server = new QLocalServer(this);
1918ee327afb Revision: 200952
Alex Gilkes <alex.gilkes@nokia.com>
parents:
diff changeset
    58
    if (!server->listen("fortune")) {
1918ee327afb Revision: 200952
Alex Gilkes <alex.gilkes@nokia.com>
parents:
diff changeset
    59
        QMessageBox::critical(this, tr("Fortune Server"),
1918ee327afb Revision: 200952
Alex Gilkes <alex.gilkes@nokia.com>
parents:
diff changeset
    60
                              tr("Unable to start the server: %1.")
1918ee327afb Revision: 200952
Alex Gilkes <alex.gilkes@nokia.com>
parents:
diff changeset
    61
                              .arg(server->errorString()));
1918ee327afb Revision: 200952
Alex Gilkes <alex.gilkes@nokia.com>
parents:
diff changeset
    62
        close();
1918ee327afb Revision: 200952
Alex Gilkes <alex.gilkes@nokia.com>
parents:
diff changeset
    63
        return;
1918ee327afb Revision: 200952
Alex Gilkes <alex.gilkes@nokia.com>
parents:
diff changeset
    64
    }
1918ee327afb Revision: 200952
Alex Gilkes <alex.gilkes@nokia.com>
parents:
diff changeset
    65
1918ee327afb Revision: 200952
Alex Gilkes <alex.gilkes@nokia.com>
parents:
diff changeset
    66
    statusLabel->setText(tr("The server is running.\n"
1918ee327afb Revision: 200952
Alex Gilkes <alex.gilkes@nokia.com>
parents:
diff changeset
    67
                            "Run the Fortune Client example now."));
1918ee327afb Revision: 200952
Alex Gilkes <alex.gilkes@nokia.com>
parents:
diff changeset
    68
1918ee327afb Revision: 200952
Alex Gilkes <alex.gilkes@nokia.com>
parents:
diff changeset
    69
    fortunes << tr("You've been leading a dog's life. Stay off the furniture.")
1918ee327afb Revision: 200952
Alex Gilkes <alex.gilkes@nokia.com>
parents:
diff changeset
    70
             << tr("You've got to think about tomorrow.")
1918ee327afb Revision: 200952
Alex Gilkes <alex.gilkes@nokia.com>
parents:
diff changeset
    71
             << tr("You will be surprised by a loud noise.")
1918ee327afb Revision: 200952
Alex Gilkes <alex.gilkes@nokia.com>
parents:
diff changeset
    72
             << tr("You will feel hungry again in another hour.")
1918ee327afb Revision: 200952
Alex Gilkes <alex.gilkes@nokia.com>
parents:
diff changeset
    73
             << tr("You might have mail.")
1918ee327afb Revision: 200952
Alex Gilkes <alex.gilkes@nokia.com>
parents:
diff changeset
    74
             << tr("You cannot kill time without injuring eternity.")
1918ee327afb Revision: 200952
Alex Gilkes <alex.gilkes@nokia.com>
parents:
diff changeset
    75
             << tr("Computers are not intelligent. They only think they are.");
1918ee327afb Revision: 200952
Alex Gilkes <alex.gilkes@nokia.com>
parents:
diff changeset
    76
1918ee327afb Revision: 200952
Alex Gilkes <alex.gilkes@nokia.com>
parents:
diff changeset
    77
    connect(quitButton, SIGNAL(clicked()), this, SLOT(close()));
1918ee327afb Revision: 200952
Alex Gilkes <alex.gilkes@nokia.com>
parents:
diff changeset
    78
    connect(server, SIGNAL(newConnection()), this, SLOT(sendFortune()));
1918ee327afb Revision: 200952
Alex Gilkes <alex.gilkes@nokia.com>
parents:
diff changeset
    79
1918ee327afb Revision: 200952
Alex Gilkes <alex.gilkes@nokia.com>
parents:
diff changeset
    80
    QHBoxLayout *buttonLayout = new QHBoxLayout;
1918ee327afb Revision: 200952
Alex Gilkes <alex.gilkes@nokia.com>
parents:
diff changeset
    81
    buttonLayout->addStretch(1);
1918ee327afb Revision: 200952
Alex Gilkes <alex.gilkes@nokia.com>
parents:
diff changeset
    82
    buttonLayout->addWidget(quitButton);
1918ee327afb Revision: 200952
Alex Gilkes <alex.gilkes@nokia.com>
parents:
diff changeset
    83
    buttonLayout->addStretch(1);
1918ee327afb Revision: 200952
Alex Gilkes <alex.gilkes@nokia.com>
parents:
diff changeset
    84
1918ee327afb Revision: 200952
Alex Gilkes <alex.gilkes@nokia.com>
parents:
diff changeset
    85
    QVBoxLayout *mainLayout = new QVBoxLayout;
1918ee327afb Revision: 200952
Alex Gilkes <alex.gilkes@nokia.com>
parents:
diff changeset
    86
    mainLayout->addWidget(statusLabel);
1918ee327afb Revision: 200952
Alex Gilkes <alex.gilkes@nokia.com>
parents:
diff changeset
    87
    mainLayout->addLayout(buttonLayout);
1918ee327afb Revision: 200952
Alex Gilkes <alex.gilkes@nokia.com>
parents:
diff changeset
    88
    setLayout(mainLayout);
1918ee327afb Revision: 200952
Alex Gilkes <alex.gilkes@nokia.com>
parents:
diff changeset
    89
1918ee327afb Revision: 200952
Alex Gilkes <alex.gilkes@nokia.com>
parents:
diff changeset
    90
    setWindowTitle(tr("Fortune Server"));
1918ee327afb Revision: 200952
Alex Gilkes <alex.gilkes@nokia.com>
parents:
diff changeset
    91
}
1918ee327afb Revision: 200952
Alex Gilkes <alex.gilkes@nokia.com>
parents:
diff changeset
    92
1918ee327afb Revision: 200952
Alex Gilkes <alex.gilkes@nokia.com>
parents:
diff changeset
    93
void Server::sendFortune()
1918ee327afb Revision: 200952
Alex Gilkes <alex.gilkes@nokia.com>
parents:
diff changeset
    94
{
1918ee327afb Revision: 200952
Alex Gilkes <alex.gilkes@nokia.com>
parents:
diff changeset
    95
    QByteArray block;
1918ee327afb Revision: 200952
Alex Gilkes <alex.gilkes@nokia.com>
parents:
diff changeset
    96
    QDataStream out(&block, QIODevice::WriteOnly);
1918ee327afb Revision: 200952
Alex Gilkes <alex.gilkes@nokia.com>
parents:
diff changeset
    97
    out.setVersion(QDataStream::Qt_4_0);
1918ee327afb Revision: 200952
Alex Gilkes <alex.gilkes@nokia.com>
parents:
diff changeset
    98
    out << (quint16)0;
1918ee327afb Revision: 200952
Alex Gilkes <alex.gilkes@nokia.com>
parents:
diff changeset
    99
    out << fortunes.at(qrand() % fortunes.size());
1918ee327afb Revision: 200952
Alex Gilkes <alex.gilkes@nokia.com>
parents:
diff changeset
   100
    out.device()->seek(0);
1918ee327afb Revision: 200952
Alex Gilkes <alex.gilkes@nokia.com>
parents:
diff changeset
   101
    out << (quint16)(block.size() - sizeof(quint16));
1918ee327afb Revision: 200952
Alex Gilkes <alex.gilkes@nokia.com>
parents:
diff changeset
   102
1918ee327afb Revision: 200952
Alex Gilkes <alex.gilkes@nokia.com>
parents:
diff changeset
   103
    QLocalSocket *clientConnection = server->nextPendingConnection();
1918ee327afb Revision: 200952
Alex Gilkes <alex.gilkes@nokia.com>
parents:
diff changeset
   104
    connect(clientConnection, SIGNAL(disconnected()),
1918ee327afb Revision: 200952
Alex Gilkes <alex.gilkes@nokia.com>
parents:
diff changeset
   105
            clientConnection, SLOT(deleteLater()));
1918ee327afb Revision: 200952
Alex Gilkes <alex.gilkes@nokia.com>
parents:
diff changeset
   106
1918ee327afb Revision: 200952
Alex Gilkes <alex.gilkes@nokia.com>
parents:
diff changeset
   107
    clientConnection->write(block);
1918ee327afb Revision: 200952
Alex Gilkes <alex.gilkes@nokia.com>
parents:
diff changeset
   108
    clientConnection->flush();
1918ee327afb Revision: 200952
Alex Gilkes <alex.gilkes@nokia.com>
parents:
diff changeset
   109
    clientConnection->disconnectFromServer();
1918ee327afb Revision: 200952
Alex Gilkes <alex.gilkes@nokia.com>
parents:
diff changeset
   110
}