sslechoserver.cpp Example File

sslechoserver/sslechoserver.cpp

  /****************************************************************************
  **
  ** Copyright (C) 2016 Kurt Pattyn <pattyn.kurt@gmail.com>.
  ** Contact: https://www.qt.io/licensing/
  **
  ** This file is part of the QtWebSockets module 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."
  **
  ** $QT_END_LICENSE$
  **
  ****************************************************************************/
  #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(nullptr)
  {
      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);

      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";
  }