sslechoserver.cpp Example File | Qt WebSockets 5.6

Qt 5.6 | Qt WebSockets | SSL Echo Server Example | sslechoserver.cpp Example File

Qt 5.6.2 Reference Documentation

# sslechoserver.cpp Example File

sslechoserver/sslechoserver.cpp

      /****************************************************************************
      **
      ** Copyright (C) 2014 Kurt Pattyn <pattyn.kurt@gmail.com>.
      ** Contact: http://www.qt.io/licensing/
      **
      ** This file is part of the QtWebSockets 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 The Qt Company. For licensing terms
      ** and conditions see http://www.qt.io/terms-conditions. For further
      ** information use the contact form at http://www.qt.io/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.
      **
      ** As a special exception, The Qt Company gives you certain additional
      ** rights. These rights are described in The Qt Company LGPL Exception
      ** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
      **
      ** $QT_END_LICENSE$
      **
      ****************************************************************************/
      #include "sslechoserver.h"
      #include "QtWebSockets/QWebSocketServer"
      #include "QtWebSockets/QWebSocket"
      #include <QtCore/QDebug>
      #include <QtCore/QFile>
      #include <QtNetwork/QSslCertificate>
      #include <QtNetwork/QSslKey>

      QT_USE_NAMESPACE

      SslEchoServer::SslEchoServer(quint16 port, QObject *parent) :
          QObject(parent),
          m_pWebSocketServer(Q_NULLPTR),
          m_clients()
      {
          m_pWebSocketServer = new QWebSocketServer(QStringLiteral("SSL Echo Server"),
                                                    QWebSocketServer::SecureMode,
                                                    this);
          QSslConfiguration sslConfiguration;
          QFile certFile(QStringLiteral(":/localhost.cert"));
          QFile keyFile(QStringLiteral(":/localhost.key"));
          certFile.open(QIODevice::ReadOnly);
          keyFile.open(QIODevice::ReadOnly);
          QSslCertificate certificate(&certFile, QSsl::Pem);
          QSslKey sslKey(&keyFile, QSsl::Rsa, QSsl::Pem);
          certFile.close();
          keyFile.close();
          sslConfiguration.setPeerVerifyMode(QSslSocket::VerifyNone);
          sslConfiguration.setLocalCertificate(certificate);
          sslConfiguration.setPrivateKey(sslKey);
          sslConfiguration.setProtocol(QSsl::TlsV1SslV3);
          m_pWebSocketServer->setSslConfiguration(sslConfiguration);

          if (m_pWebSocketServer->listen(QHostAddress::Any, port))
          {
              qDebug() << "SSL Echo Server listening on port" << port;
              connect(m_pWebSocketServer, &QWebSocketServer::newConnection,
                      this, &SslEchoServer::onNewConnection);
              connect(m_pWebSocketServer, &QWebSocketServer::sslErrors,
                      this, &SslEchoServer::onSslErrors);
          }
      }

      SslEchoServer::~SslEchoServer()
      {
          m_pWebSocketServer->close();
          qDeleteAll(m_clients.begin(), m_clients.end());
      }

      void SslEchoServer::onNewConnection()
      {
          QWebSocket *pSocket = m_pWebSocketServer->nextPendingConnection();

          qDebug() << "Client connected:" << pSocket->peerName() << pSocket->origin();

          connect(pSocket, &QWebSocket::textMessageReceived, this, &SslEchoServer::processTextMessage);
          connect(pSocket, &QWebSocket::binaryMessageReceived,
                  this, &SslEchoServer::processBinaryMessage);
          connect(pSocket, &QWebSocket::disconnected, this, &SslEchoServer::socketDisconnected);
          //connect(pSocket, &QWebSocket::pong, this, &SslEchoServer::processPong);

          m_clients << pSocket;
      }

      void SslEchoServer::processTextMessage(QString message)
      {
          QWebSocket *pClient = qobject_cast<QWebSocket *>(sender());
          if (pClient)
          {
              pClient->sendTextMessage(message);
          }
      }

      void SslEchoServer::processBinaryMessage(QByteArray message)
      {
          QWebSocket *pClient = qobject_cast<QWebSocket *>(sender());
          if (pClient)
          {
              pClient->sendBinaryMessage(message);
          }
      }

      void SslEchoServer::socketDisconnected()
      {
          qDebug() << "Client disconnected";
          QWebSocket *pClient = qobject_cast<QWebSocket *>(sender());
          if (pClient)
          {
              m_clients.removeAll(pClient);
              pClient->deleteLater();
          }
      }

      void SslEchoServer::onSslErrors(const QList<QSslError> &)
      {
          qDebug() << "Ssl errors occurred";
      }