echoserver.cpp Example File | Qt WebSockets 5.6

Qt 5.6 | Qt WebSockets | Echo Server Example | echoserver.cpp Example File

Qt 5.6.2 Reference Documentation

# echoserver.cpp Example File

echoserver/echoserver.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 "echoserver.h"
      #include "QtWebSockets/qwebsocketserver.h"
      #include "QtWebSockets/qwebsocket.h"
      #include <QtCore/QDebug>

      QT_USE_NAMESPACE

      EchoServer::EchoServer(quint16 port, bool debug, QObject *parent) :
          QObject(parent),
          m_pWebSocketServer(new QWebSocketServer(QStringLiteral("Echo Server"),
                                                  QWebSocketServer::NonSecureMode, this)),
          m_clients(),
          m_debug(debug)
      {
          if (m_pWebSocketServer->listen(QHostAddress::Any, port)) {
              if (m_debug)
                  qDebug() << "Echoserver listening on port" << port;
              connect(m_pWebSocketServer, &QWebSocketServer::newConnection,
                      this, &EchoServer::onNewConnection);
              connect(m_pWebSocketServer, &QWebSocketServer::closed, this, &EchoServer::closed);
          }
      }

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

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

          connect(pSocket, &QWebSocket::textMessageReceived, this, &EchoServer::processTextMessage);
          connect(pSocket, &QWebSocket::binaryMessageReceived, this, &EchoServer::processBinaryMessage);
          connect(pSocket, &QWebSocket::disconnected, this, &EchoServer::socketDisconnected);

          m_clients << pSocket;
      }

      void EchoServer::processTextMessage(QString message)
      {
          QWebSocket *pClient = qobject_cast<QWebSocket *>(sender());
          if (m_debug)
              qDebug() << "Message received:" << message;
          if (pClient) {
              pClient->sendTextMessage(message);
          }
      }

      void EchoServer::processBinaryMessage(QByteArray message)
      {
          QWebSocket *pClient = qobject_cast<QWebSocket *>(sender());
          if (m_debug)
              qDebug() << "Binary Message received:" << message;
          if (pClient) {
              pClient->sendBinaryMessage(message);
          }
      }

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