375 lines
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HTML
375 lines
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<h1 class="title">peermanager.cpp Example File</h1>
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<span class="small-subtitle">network/network-chat/peermanager.cpp</span>
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<!-- $$$network/network-chat/peermanager.cpp-description -->
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<div class="descr"> <a name="details"></a>
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<pre class="cpp"> <span class="comment">/****************************************************************************
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**
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** Copyright (C) 2015 The Qt Company Ltd.
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** Contact: http://www.qt.io/licensing/
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**
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** This file is part of the examples of the Qt Toolkit.
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**
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** $QT_BEGIN_LICENSE:BSD$
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** You may use this file under the terms of the BSD license as follows:
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**
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** "Redistribution and use in source and binary forms, with or without
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** modification, are permitted provided that the following conditions are
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** met:
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** * Redistributions of source code must retain the above copyright
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** notice, this list of conditions and the following disclaimer.
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** * Redistributions in binary form must reproduce the above copyright
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** notice, this list of conditions and the following disclaimer in
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** the documentation and/or other materials provided with the
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** distribution.
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** * Neither the name of The Qt Company Ltd nor the names of its
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** contributors may be used to endorse or promote products derived
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** from this software without specific prior written permission.
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**
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**
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** THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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** "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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** LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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** A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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** OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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** SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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** LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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** DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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** THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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** (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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** OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE."
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**
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** $QT_END_LICENSE$
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**
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****************************************************************************/</span>
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<span class="preprocessor">#include <QtNetwork></span>
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<span class="preprocessor">#include "client.h"</span>
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<span class="preprocessor">#include "connection.h"</span>
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<span class="preprocessor">#include "peermanager.h"</span>
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<span class="keyword">static</span> <span class="keyword">const</span> <span class="type"><a href="qtglobal.html#qint32-typedef">qint32</a></span> BroadcastInterval <span class="operator">=</span> <span class="number">2000</span>;
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<span class="keyword">static</span> <span class="keyword">const</span> <span class="type">unsigned</span> broadcastPort <span class="operator">=</span> <span class="number">45000</span>;
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PeerManager<span class="operator">::</span>PeerManager(Client <span class="operator">*</span>client)
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: <span class="type"><a href="qobject.html">QObject</a></span>(client)
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{
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<span class="keyword">this</span><span class="operator">-</span><span class="operator">></span>client <span class="operator">=</span> client;
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<span class="type"><a href="qstringlist.html">QStringList</a></span> envVariables;
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envVariables <span class="operator"><</span><span class="operator"><</span> <span class="string">"USERNAME.*"</span> <span class="operator"><</span><span class="operator"><</span> <span class="string">"USER.*"</span> <span class="operator"><</span><span class="operator"><</span> <span class="string">"USERDOMAIN.*"</span>
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<span class="operator"><</span><span class="operator"><</span> <span class="string">"HOSTNAME.*"</span> <span class="operator"><</span><span class="operator"><</span> <span class="string">"DOMAINNAME.*"</span>;
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<span class="type"><a href="qstringlist.html">QStringList</a></span> environment <span class="operator">=</span> <span class="type"><a href="qprocess.html">QProcess</a></span><span class="operator">::</span>systemEnvironment();
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foreach (<span class="type"><a href="qstring.html">QString</a></span> string<span class="operator">,</span> envVariables) {
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<span class="type">int</span> index <span class="operator">=</span> environment<span class="operator">.</span>indexOf(<span class="type"><a href="qregexp.html">QRegExp</a></span>(string));
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<span class="keyword">if</span> (index <span class="operator">!</span><span class="operator">=</span> <span class="operator">-</span><span class="number">1</span>) {
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<span class="type"><a href="qstringlist.html">QStringList</a></span> stringList <span class="operator">=</span> environment<span class="operator">.</span>at(index)<span class="operator">.</span>split(<span class="char">'='</span>);
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<span class="keyword">if</span> (stringList<span class="operator">.</span>size() <span class="operator">=</span><span class="operator">=</span> <span class="number">2</span>) {
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username <span class="operator">=</span> stringList<span class="operator">.</span>at(<span class="number">1</span>)<span class="operator">.</span>toUtf8();
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<span class="keyword">break</span>;
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}
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}
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}
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<span class="keyword">if</span> (username<span class="operator">.</span>isEmpty())
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<span class="preprocessor">#ifndef Q_OS_SYMBIAN</span>
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username <span class="operator">=</span> <span class="string">"unknown"</span>;
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<span class="preprocessor">#else</span>
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username <span class="operator">=</span> <span class="string">"QtS60"</span>;
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<span class="preprocessor">#endif</span>
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updateAddresses();
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serverPort <span class="operator">=</span> <span class="number">0</span>;
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broadcastSocket<span class="operator">.</span>bind(<span class="type"><a href="qhostaddress.html">QHostAddress</a></span><span class="operator">::</span>Any<span class="operator">,</span> broadcastPort<span class="operator">,</span> <span class="type"><a href="qudpsocket.html">QUdpSocket</a></span><span class="operator">::</span>ShareAddress
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<span class="operator">|</span> <span class="type"><a href="qudpsocket.html">QUdpSocket</a></span><span class="operator">::</span>ReuseAddressHint);
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connect(<span class="operator">&</span>broadcastSocket<span class="operator">,</span> SIGNAL(readyRead())<span class="operator">,</span>
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<span class="keyword">this</span><span class="operator">,</span> SLOT(readBroadcastDatagram()));
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broadcastTimer<span class="operator">.</span>setInterval(BroadcastInterval);
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connect(<span class="operator">&</span>broadcastTimer<span class="operator">,</span> SIGNAL(timeout())<span class="operator">,</span>
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<span class="keyword">this</span><span class="operator">,</span> SLOT(sendBroadcastDatagram()));
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}
|
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<span class="type">void</span> PeerManager<span class="operator">::</span>setServerPort(<span class="type">int</span> port)
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{
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serverPort <span class="operator">=</span> port;
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}
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<span class="type"><a href="qbytearray.html">QByteArray</a></span> PeerManager<span class="operator">::</span>userName() <span class="keyword">const</span>
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{
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<span class="keyword">return</span> username;
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}
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<span class="type">void</span> PeerManager<span class="operator">::</span>startBroadcasting()
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{
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broadcastTimer<span class="operator">.</span>start();
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}
|
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|
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<span class="type">bool</span> PeerManager<span class="operator">::</span>isLocalHostAddress(<span class="keyword">const</span> <span class="type"><a href="qhostaddress.html">QHostAddress</a></span> <span class="operator">&</span>address)
|
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{
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|
foreach (<span class="type"><a href="qhostaddress.html">QHostAddress</a></span> localAddress<span class="operator">,</span> ipAddresses) {
|
|
<span class="keyword">if</span> (address <span class="operator">=</span><span class="operator">=</span> localAddress)
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|
<span class="keyword">return</span> <span class="keyword">true</span>;
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|
}
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|
<span class="keyword">return</span> <span class="keyword">false</span>;
|
|
}
|
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|
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<span class="type">void</span> PeerManager<span class="operator">::</span>sendBroadcastDatagram()
|
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{
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|
<span class="type"><a href="qbytearray.html">QByteArray</a></span> datagram(username);
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|
datagram<span class="operator">.</span>append(<span class="char">'@'</span>);
|
|
datagram<span class="operator">.</span>append(<span class="type"><a href="qbytearray.html">QByteArray</a></span><span class="operator">::</span>number(serverPort));
|
|
|
|
<span class="type">bool</span> validBroadcastAddresses <span class="operator">=</span> <span class="keyword">true</span>;
|
|
foreach (<span class="type"><a href="qhostaddress.html">QHostAddress</a></span> address<span class="operator">,</span> broadcastAddresses) {
|
|
<span class="keyword">if</span> (broadcastSocket<span class="operator">.</span>writeDatagram(datagram<span class="operator">,</span> address<span class="operator">,</span>
|
|
broadcastPort) <span class="operator">=</span><span class="operator">=</span> <span class="operator">-</span><span class="number">1</span>)
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|
validBroadcastAddresses <span class="operator">=</span> <span class="keyword">false</span>;
|
|
}
|
|
|
|
<span class="keyword">if</span> (<span class="operator">!</span>validBroadcastAddresses)
|
|
updateAddresses();
|
|
}
|
|
|
|
<span class="type">void</span> PeerManager<span class="operator">::</span>readBroadcastDatagram()
|
|
{
|
|
<span class="keyword">while</span> (broadcastSocket<span class="operator">.</span>hasPendingDatagrams()) {
|
|
<span class="type"><a href="qhostaddress.html">QHostAddress</a></span> senderIp;
|
|
<span class="type"><a href="qtglobal.html#quint16-typedef">quint16</a></span> senderPort;
|
|
<span class="type"><a href="qbytearray.html">QByteArray</a></span> datagram;
|
|
datagram<span class="operator">.</span>resize(broadcastSocket<span class="operator">.</span>pendingDatagramSize());
|
|
<span class="keyword">if</span> (broadcastSocket<span class="operator">.</span>readDatagram(datagram<span class="operator">.</span>data()<span class="operator">,</span> datagram<span class="operator">.</span>size()<span class="operator">,</span>
|
|
<span class="operator">&</span>senderIp<span class="operator">,</span> <span class="operator">&</span>senderPort) <span class="operator">=</span><span class="operator">=</span> <span class="operator">-</span><span class="number">1</span>)
|
|
<span class="keyword">continue</span>;
|
|
|
|
<span class="type"><a href="qlist.html">QList</a></span><span class="operator"><</span><span class="type"><a href="qbytearray.html">QByteArray</a></span><span class="operator">></span> list <span class="operator">=</span> datagram<span class="operator">.</span>split(<span class="char">'@'</span>);
|
|
<span class="keyword">if</span> (list<span class="operator">.</span>size() <span class="operator">!</span><span class="operator">=</span> <span class="number">2</span>)
|
|
<span class="keyword">continue</span>;
|
|
|
|
<span class="type">int</span> senderServerPort <span class="operator">=</span> list<span class="operator">.</span>at(<span class="number">1</span>)<span class="operator">.</span>toInt();
|
|
<span class="keyword">if</span> (isLocalHostAddress(senderIp) <span class="operator">&</span><span class="operator">&</span> senderServerPort <span class="operator">=</span><span class="operator">=</span> serverPort)
|
|
<span class="keyword">continue</span>;
|
|
|
|
<span class="keyword">if</span> (<span class="operator">!</span>client<span class="operator">-</span><span class="operator">></span>hasConnection(senderIp)) {
|
|
Connection <span class="operator">*</span>connection <span class="operator">=</span> <span class="keyword">new</span> Connection(<span class="keyword">this</span>);
|
|
<span class="keyword">emit</span> newConnection(connection);
|
|
connection<span class="operator">-</span><span class="operator">></span>connectToHost(senderIp<span class="operator">,</span> senderServerPort);
|
|
}
|
|
}
|
|
}
|
|
|
|
<span class="type">void</span> PeerManager<span class="operator">::</span>updateAddresses()
|
|
{
|
|
broadcastAddresses<span class="operator">.</span>clear();
|
|
ipAddresses<span class="operator">.</span>clear();
|
|
foreach (<span class="type"><a href="qnetworkinterface.html">QNetworkInterface</a></span> interface<span class="operator">,</span> <span class="type"><a href="qnetworkinterface.html">QNetworkInterface</a></span><span class="operator">::</span>allInterfaces()) {
|
|
foreach (<span class="type"><a href="qnetworkaddressentry.html">QNetworkAddressEntry</a></span> entry<span class="operator">,</span> interface<span class="operator">.</span>addressEntries()) {
|
|
<span class="type"><a href="qhostaddress.html">QHostAddress</a></span> broadcastAddress <span class="operator">=</span> entry<span class="operator">.</span>broadcast();
|
|
<span class="keyword">if</span> (broadcastAddress <span class="operator">!</span><span class="operator">=</span> <span class="type"><a href="qhostaddress.html">QHostAddress</a></span><span class="operator">::</span>Null <span class="operator">&</span><span class="operator">&</span> entry<span class="operator">.</span>ip() <span class="operator">!</span><span class="operator">=</span> <span class="type"><a href="qhostaddress.html">QHostAddress</a></span><span class="operator">::</span>LocalHost) {
|
|
broadcastAddresses <span class="operator"><</span><span class="operator"><</span> broadcastAddress;
|
|
ipAddresses <span class="operator"><</span><span class="operator"><</span> entry<span class="operator">.</span>ip();
|
|
}
|
|
}
|
|
}
|
|
}</pre>
|
|
</div>
|
|
<!-- @@@network/network-chat/peermanager.cpp -->
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