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diff --git a/examples/network/network-chat/peermanager.cpp b/examples/network/network-chat/peermanager.cpp
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+++ b/examples/network/network-chat/peermanager.cpp
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+/****************************************************************************
+**
+** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).
+** Contact: Qt Software Information (qt-info@nokia.com)
+**
+** This file is part of the examples of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** No Commercial Usage
+** This file contains pre-release code and may not be distributed.
+** You may use this file in accordance with the terms and conditions
+** contained in the either Technology Preview License Agreement or the
+** Beta Release License Agreement.
+**
+** 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 as published by the Free Software
+** Foundation and appearing in the file LICENSE.LGPL included in the
+** packaging of this file.  Please review the following information to
+** ensure the GNU Lesser General Public License version 2.1 requirements
+** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
+**
+** In addition, as a special exception, Nokia gives you certain
+** additional rights. These rights are described in the Nokia Qt LGPL
+** Exception version 1.0, included in the file LGPL_EXCEPTION.txt in this
+** package.
+**
+** GNU General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU
+** General Public License version 3.0 as published by the Free Software
+** Foundation and appearing in the file LICENSE.GPL included in the
+** packaging of this file.  Please review the following information to
+** ensure the GNU General Public License version 3.0 requirements will be
+** met: http://www.gnu.org/copyleft/gpl.html.
+**
+** If you are unsure which license is appropriate for your use, please
+** contact the sales department at qt-sales@nokia.com.
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#include <QtNetwork>
+
+#include "client.h"
+#include "connection.h"
+#include "peermanager.h"
+
+static const qint32 BroadcastInterval = 2000;
+static const unsigned broadcastPort = 45000;
+
+PeerManager::PeerManager(Client *client)
+    : QObject(client)
+{
+    this->client = client;
+
+    QStringList envVariables;
+    envVariables << "USERNAME.*" << "USER.*" << "USERDOMAIN.*"
+                 << "HOSTNAME.*" << "DOMAINNAME.*";
+
+    QStringList environment = QProcess::systemEnvironment();
+    foreach (QString string, envVariables) {
+        int index = environment.indexOf(QRegExp(string));
+        if (index != -1) {
+            QStringList stringList = environment.at(index).split("=");
+            if (stringList.size() == 2) {
+                username = stringList.at(1).toUtf8();
+                break;
+            }
+        }
+    }
+
+    if (username.isEmpty())
+        username = "unknown";
+
+    updateAddresses();
+    serverPort = 0;
+
+    broadcastSocket.bind(QHostAddress::Any, broadcastPort, QUdpSocket::ShareAddress
+                         | QUdpSocket::ReuseAddressHint);
+    connect(&broadcastSocket, SIGNAL(readyRead()),
+            this, SLOT(readBroadcastDatagram()));
+
+    broadcastTimer.setInterval(BroadcastInterval);
+    connect(&broadcastTimer, SIGNAL(timeout()),
+            this, SLOT(sendBroadcastDatagram()));
+}
+
+void PeerManager::setServerPort(int port)
+{
+    serverPort = port;
+}
+
+QByteArray PeerManager::userName() const
+{
+    return username;
+}
+
+void PeerManager::startBroadcasting()
+{
+    broadcastTimer.start();
+}
+
+bool PeerManager::isLocalHostAddress(const QHostAddress &address)
+{
+    foreach (QHostAddress localAddress, ipAddresses) {
+        if (address == localAddress)
+            return true;
+    }
+    return false;
+}
+
+void PeerManager::sendBroadcastDatagram()
+{
+    QByteArray datagram(username);
+    datagram.append('@');
+    datagram.append(QByteArray::number(serverPort));
+
+    bool validBroadcastAddresses = true;
+    foreach (QHostAddress address, broadcastAddresses) {
+        if (broadcastSocket.writeDatagram(datagram, address,
+                                          broadcastPort) == -1)
+            validBroadcastAddresses = false;
+    }
+
+    if (!validBroadcastAddresses)
+        updateAddresses();
+}
+
+void PeerManager::readBroadcastDatagram()
+{
+    while (broadcastSocket.hasPendingDatagrams()) {
+        QHostAddress senderIp;
+        quint16 senderPort;
+        QByteArray datagram;
+        datagram.resize(broadcastSocket.pendingDatagramSize());
+        if (broadcastSocket.readDatagram(datagram.data(), datagram.size(),
+                                         &senderIp, &senderPort) == -1)
+            continue;
+
+        QList<QByteArray> list = datagram.split('@');
+        if (list.size() != 2)
+            continue;
+
+        int senderServerPort = list.at(1).toInt();
+        if (isLocalHostAddress(senderIp) && senderServerPort == serverPort)
+            continue;
+
+        if (!client->hasConnection(senderIp)) {
+            Connection *connection = new Connection(this);
+            emit newConnection(connection);
+            connection->connectToHost(senderIp, senderServerPort);
+        }
+    }
+}
+
+void PeerManager::updateAddresses()
+{
+    broadcastAddresses.clear();
+    ipAddresses.clear();
+    foreach (QNetworkInterface interface, QNetworkInterface::allInterfaces()) {
+        foreach (QNetworkAddressEntry entry, interface.addressEntries()) {
+            QHostAddress broadcastAddress = entry.broadcast();
+            if (broadcastAddress != QHostAddress::Null &&
+                entry.ip() != QHostAddress::LocalHost) {
+                broadcastAddresses << broadcastAddress;
+                ipAddresses << entry.ip();
+            }
+        }
+    }
+}