<?xml version="1.0" encoding="UTF-8"?> <!DOCTYPE html> <html lang="en"> <head> <meta http-equiv="Content-Type" content="text/html; charset=utf-8" /> <title>mainwindow.cpp Example File | Qt Network 5.12.6</title> <link rel="stylesheet" type="text/css" href="style/offline-simple.css" /> <script type="text/javascript"> document.getElementsByTagName("link").item(0).setAttribute("href", "style/offline.css"); // loading style sheet breaks anchors that were jumped to before // so force jumping to anchor again setTimeout(function() { var anchor = location.hash; // need to jump to different anchor first (e.g. none) location.hash = "#"; setTimeout(function() { location.hash = anchor; }, 0); }, 0); </script> </head> <body> <div class="header" id="qtdocheader"> <div class="main"> <div class="main-rounded"> <div class="navigationbar"> <table><tr> <td >Qt 5.12</td><td ><a href="qtnetwork-index.html">Qt Network</a></td><td ><a href="qtnetwork-secureudpserver-example.html">DTLS server</a></td><td >mainwindow.cpp Example File</td></tr></table><table class="buildversion"><tr> <td id="buildversion" width="100%" align="right"><a href="qtnetwork-index.html">Qt 5.12.6 Reference Documentation</a></td> </tr></table> </div> </div> <div class="content"> <div class="line"> <div class="content mainContent"> <div class="sidebar"><div class="sidebar-content" id="sidebar-content"></div></div> <h1 class="title">mainwindow.cpp Example File</h1> <span class="subtitle">secureudpserver/mainwindow.cpp</span> <!-- $$$secureudpserver/mainwindow.cpp-description --> <div class="descr"> <a name="details"></a> <pre class="cpp"> <span class="comment">/**************************************************************************** ** ** Copyright (C) 2018 The Qt Company Ltd. ** Contact: https://www.qt.io/licensing/ ** ** This file is part of the examples of the Qt Toolkit. ** ** $QT_BEGIN_LICENSE:BSD$ ** 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 The Qt Company. For licensing terms ** and conditions see https://www.qt.io/terms-conditions. For further ** information use the contact form at https://www.qt.io/contact-us. ** ** BSD License Usage ** Alternatively, you may use this file under the terms of the BSD license ** as follows: ** ** "Redistribution and use in source and binary forms, with or without ** modification, are permitted provided that the following conditions are ** met: ** * Redistributions of source code must retain the above copyright ** notice, this list of conditions and the following disclaimer. ** * Redistributions in binary form must reproduce the above copyright ** notice, this list of conditions and the following disclaimer in ** the documentation and/or other materials provided with the ** distribution. ** * Neither the name of The Qt Company Ltd nor the names of its ** contributors may be used to endorse or promote products derived ** from this software without specific prior written permission. ** ** ** THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS ** "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT ** LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR ** A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT ** OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, ** SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT ** LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, ** DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY ** THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT ** (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE ** OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE." ** ** $QT_END_LICENSE$ ** ****************************************************************************/</span> <span class="preprocessor">#include "mainwindow.h"</span> <span class="preprocessor">#include "nicselector.h"</span> <span class="preprocessor">#include "ui_mainwindow.h"</span> MainWindow<span class="operator">::</span>MainWindow() : ui(<span class="keyword">new</span> Ui<span class="operator">::</span>MainWindow) { ui<span class="operator">-</span><span class="operator">></span>setupUi(<span class="keyword">this</span>); connect(<span class="operator">&</span>server<span class="operator">,</span> <span class="operator">&</span>DtlsServer<span class="operator">::</span>errorMessage<span class="operator">,</span> <span class="keyword">this</span><span class="operator">,</span> <span class="operator">&</span>MainWindow<span class="operator">::</span>addErrorMessage); connect(<span class="operator">&</span>server<span class="operator">,</span> <span class="operator">&</span>DtlsServer<span class="operator">::</span>warningMessage<span class="operator">,</span> <span class="keyword">this</span><span class="operator">,</span> <span class="operator">&</span>MainWindow<span class="operator">::</span>addWarningMessage); connect(<span class="operator">&</span>server<span class="operator">,</span> <span class="operator">&</span>DtlsServer<span class="operator">::</span>infoMessage<span class="operator">,</span> <span class="keyword">this</span><span class="operator">,</span> <span class="operator">&</span>MainWindow<span class="operator">::</span>addInfoMessage); connect(<span class="operator">&</span>server<span class="operator">,</span> <span class="operator">&</span>DtlsServer<span class="operator">::</span>datagramReceived<span class="operator">,</span> <span class="keyword">this</span><span class="operator">,</span> <span class="operator">&</span>MainWindow<span class="operator">::</span>addClientMessage); updateUi(); } MainWindow<span class="operator">::</span><span class="operator">~</span>MainWindow() { <span class="keyword">delete</span> ui; } <span class="type">void</span> MainWindow<span class="operator">::</span>on_startButton_clicked() { <span class="keyword">if</span> (<span class="operator">!</span>server<span class="operator">.</span>isListening()) { NicSelector ipDialog; <span class="keyword">if</span> (ipDialog<span class="operator">.</span>exec() <span class="operator">=</span><span class="operator">=</span> <span class="type">QDialog</span><span class="operator">::</span>Accepted) { <span class="keyword">const</span> <span class="type"><a href="qhostaddress.html">QHostAddress</a></span> address <span class="operator">=</span> ipDialog<span class="operator">.</span>selectedIp(); <span class="keyword">const</span> <span class="type"><a href="../qtcore/qtglobal.html#quint16-typedef">quint16</a></span> port <span class="operator">=</span> ipDialog<span class="operator">.</span>selectedPort(); <span class="keyword">if</span> (address<span class="operator">.</span>isNull()) { addErrorMessage(tr(<span class="string">"Failed to start listening, no valid address/port"</span>)); } <span class="keyword">else</span> <span class="keyword">if</span> (server<span class="operator">.</span>listen(address<span class="operator">,</span> port)) { addInfoMessage(tr(<span class="string">"Server is listening on address %1 and port %2"</span>) <span class="operator">.</span>arg(address<span class="operator">.</span>toString()) <span class="operator">.</span>arg(port)); } } } <span class="keyword">else</span> { server<span class="operator">.</span>close(); addInfoMessage(tr(<span class="string">"Server is not accepting new connections"</span>)); } updateUi(); } <span class="type">void</span> MainWindow<span class="operator">::</span>on_quitButton_clicked() { <span class="type"><a href="../qtcore/qcoreapplication.html">QCoreApplication</a></span><span class="operator">::</span>exit(<span class="number">0</span>); } <span class="type">void</span> MainWindow<span class="operator">::</span>updateUi() { server<span class="operator">.</span>isListening() <span class="operator">?</span> ui<span class="operator">-</span><span class="operator">></span>startButton<span class="operator">-</span><span class="operator">></span>setText(tr(<span class="string">"Stop listening"</span>)) : ui<span class="operator">-</span><span class="operator">></span>startButton<span class="operator">-</span><span class="operator">></span>setText(tr(<span class="string">"Start listening"</span>)); } <span class="keyword">const</span> <span class="type"><a href="../qtcore/qstring.html">QString</a></span> colorizer(<span class="type"><a href="../qtcore/qstring.html#QStringLiteral">QStringLiteral</a></span>(<span class="string">"<font color=\"%1\">%2</font><br>"</span>)); <span class="type">void</span> MainWindow<span class="operator">::</span>addErrorMessage(<span class="keyword">const</span> <span class="type"><a href="../qtcore/qstring.html">QString</a></span> <span class="operator">&</span>message) { ui<span class="operator">-</span><span class="operator">></span>serverInfo<span class="operator">-</span><span class="operator">></span>insertHtml(colorizer<span class="operator">.</span>arg(<span class="type"><a href="../qtcore/qstring.html#QStringLiteral">QStringLiteral</a></span>(<span class="string">"Crimson"</span>)<span class="operator">,</span> message)); } <span class="type">void</span> MainWindow<span class="operator">::</span>addWarningMessage(<span class="keyword">const</span> <span class="type"><a href="../qtcore/qstring.html">QString</a></span> <span class="operator">&</span>message) { ui<span class="operator">-</span><span class="operator">></span>serverInfo<span class="operator">-</span><span class="operator">></span>insertHtml(colorizer<span class="operator">.</span>arg(<span class="type"><a href="../qtcore/qstring.html#QStringLiteral">QStringLiteral</a></span>(<span class="string">"DarkOrange"</span>)<span class="operator">,</span> message)); } <span class="type">void</span> MainWindow<span class="operator">::</span>addInfoMessage(<span class="keyword">const</span> <span class="type"><a href="../qtcore/qstring.html">QString</a></span> <span class="operator">&</span>message) { ui<span class="operator">-</span><span class="operator">></span>serverInfo<span class="operator">-</span><span class="operator">></span>insertHtml(colorizer<span class="operator">.</span>arg(<span class="type"><a href="../qtcore/qstring.html#QStringLiteral">QStringLiteral</a></span>(<span class="string">"DarkBlue"</span>)<span class="operator">,</span> message)); } <span class="type">void</span> MainWindow<span class="operator">::</span>addClientMessage(<span class="keyword">const</span> <span class="type"><a href="../qtcore/qstring.html">QString</a></span> <span class="operator">&</span>peerInfo<span class="operator">,</span> <span class="keyword">const</span> <span class="type"><a href="../qtcore/qbytearray.html">QByteArray</a></span> <span class="operator">&</span>datagram<span class="operator">,</span> <span class="keyword">const</span> <span class="type"><a href="../qtcore/qbytearray.html">QByteArray</a></span> <span class="operator">&</span>plainText) { <span class="keyword">static</span> <span class="keyword">const</span> <span class="type"><a href="../qtcore/qstring.html">QString</a></span> messageColor <span class="operator">=</span> <span class="type"><a href="../qtcore/qstring.html#QStringLiteral">QStringLiteral</a></span>(<span class="string">"DarkMagenta"</span>); <span class="keyword">static</span> <span class="keyword">const</span> <span class="type"><a href="../qtcore/qstring.html">QString</a></span> formatter <span class="operator">=</span> <span class="type"><a href="../qtcore/qstring.html#QStringLiteral">QStringLiteral</a></span>(<span class="string">"<br>---------------"</span> <span class="string">"<br>A message from %1"</span> <span class="string">"<br>DTLS datagram:<br> %2"</span> <span class="string">"<br>As plain text:<br> %3"</span>); <span class="keyword">const</span> <span class="type"><a href="../qtcore/qstring.html">QString</a></span> html <span class="operator">=</span> formatter<span class="operator">.</span>arg(peerInfo<span class="operator">,</span> <span class="type"><a href="../qtcore/qstring.html">QString</a></span><span class="operator">::</span>fromUtf8(datagram<span class="operator">.</span>toHex(<span class="char">' '</span>))<span class="operator">,</span> <span class="type"><a href="../qtcore/qstring.html">QString</a></span><span class="operator">::</span>fromUtf8(plainText)); ui<span class="operator">-</span><span class="operator">></span>messages<span class="operator">-</span><span class="operator">></span>insertHtml(colorizer<span class="operator">.</span>arg(messageColor<span class="operator">,</span> html)); } </pre> </div> <!-- @@@secureudpserver/mainwindow.cpp --> </div> </div> </div> </div> </div> <div class="footer"> <p> <acronym title="Copyright">©</acronym> 2019 The Qt Company Ltd. Documentation contributions included herein are the copyrights of their respective owners.<br/> The documentation provided herein is licensed under the terms of the <a href="http://www.gnu.org/licenses/fdl.html">GNU Free Documentation License version 1.3</a> as published by the Free Software Foundation.<br/> Qt and respective logos are trademarks of The Qt Company Ltd. in Finland and/or other countries worldwide. All other trademarks are property of their respective owners. </p> </div> </body> </html>