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diff --git a/examples/webchannel/chatserver-cpp/chatserver.cpp b/examples/webchannel/chatserver-cpp/chatserver.cpp
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+/****************************************************************************
+**
+** Copyright (C) 2014 Klarälvdalens Datakonsult AB, a KDAB Group company, info@kdab.com, author Milian Wolff <milian.wolff@kdab.com>
+** Contact: http://www.qt-project.org/legal
+**
+** This file is part of the QtWebChannel module of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:LGPL21$
+** Commercial License Usage
+** Licensees holding valid commercial Qt licenses may use this file in
+** accordance with the commercial license agreement provided with the
+** Software or, alternatively, in accordance with the terms contained in
+** a written agreement between you and Digia. For licensing terms and
+** conditions see http://qt.digia.com/licensing. For further information
+** use the contact form at http://qt.digia.com/contact-us.
+**
+** GNU Lesser General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU Lesser
+** General Public License version 2.1 or version 3 as published by the Free
+** Software Foundation and appearing in the file LICENSE.LGPLv21 and
+** LICENSE.LGPLv3 included in the packaging of this file. Please review the
+** following information to ensure the GNU Lesser General Public License
+** requirements will be met: https://www.gnu.org/licenses/lgpl.html and
+** http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
+**
+** In addition, as a special exception, Digia gives you certain additional
+** rights. These rights are described in the Digia Qt LGPL Exception
+** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#include "chatserver.h"
+
+#include <QtCore/QDebug>
+#include <QTimer>
+#include <QTime>
+
+QT_BEGIN_NAMESPACE
+
+ChatServer::ChatServer(QObject *parent)
+ : QObject(parent)
+{
+ QTimer* t = new QTimer(this);
+ connect(t, SIGNAL(timeout()), this, SLOT(sendKeepAlive()));
+ t->start(10000);
+
+ m_keepAliveCheckTimer = new QTimer(this);
+ m_keepAliveCheckTimer->setSingleShot(true);
+ m_keepAliveCheckTimer->setInterval(2000);
+ connect(m_keepAliveCheckTimer, SIGNAL(timeout()), this, SLOT(checkKeepAliveResponses()));
+}
+
+ChatServer::~ChatServer()
+{}
+
+
+bool ChatServer::login(const QString& userName)
+{
+ //stop keepAliveCheck, when a new user logged in
+ if (m_keepAliveCheckTimer->isActive()) {
+ m_keepAliveCheckTimer->stop();
+ m_stillAliveUsers.clear();
+ }
+
+ if (m_userList.contains(userName)) {
+ return false;
+ }
+
+ qDebug() << "User logged in:" << userName;
+ m_userList.append(userName);
+ m_userList.sort();
+ emit userListChanged();
+ emit userCountChanged();
+ return true;
+}
+
+bool ChatServer::logout(const QString& userName)
+{
+ if (!m_userList.contains(userName)) {
+ return false;
+ } else {
+ m_userList.removeAt(m_userList.indexOf(userName));
+ emit userListChanged();
+ emit userCountChanged();
+ return true;
+ }
+}
+
+bool ChatServer::sendMessage(const QString& user, const QString& msg)
+{
+ if (m_userList.contains(user)) {
+ emit newMessage(QTime::currentTime().toString("HH:mm:ss"), user, msg);
+ return true;
+ } else {
+ return false;
+ }
+}
+
+void ChatServer::sendKeepAlive() {
+ emit keepAlive();
+ m_keepAliveCheckTimer->start();
+}
+
+void ChatServer::checkKeepAliveResponses() {
+ qDebug() << "Keep Alive Check" << m_stillAliveUsers;
+ m_userList = m_stillAliveUsers;
+ m_stillAliveUsers.clear();
+ m_userList.sort();
+ emit userListChanged();
+}
+
+void ChatServer::keepAliveResponse(const QString& user) {
+ m_stillAliveUsers.append(user);
+}
+
+
+QStringList ChatServer::userList() const
+{
+ return m_userList;
+}
+
+QT_END_NAMESPACE