echoclient.cpp Example File | Qt WebSockets 5.6

Qt 5.6 | Qt WebSockets | Echo Client Example | echoclient.cpp Example File

Qt 5.6.2 Reference Documentation

# echoclient.cpp Example File

echoclient/echoclient.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 "echoclient.h"
      #include <QtCore/QDebug>

      QT_USE_NAMESPACE

      EchoClient::EchoClient(const QUrl &url, bool debug, QObject *parent) :
          QObject(parent),
          m_url(url),
          m_debug(debug)
      {
          if (m_debug)
              qDebug() << "WebSocket server:" << url;
          connect(&m_webSocket, &QWebSocket::connected, this, &EchoClient::onConnected);
          connect(&m_webSocket, &QWebSocket::disconnected, this, &EchoClient::closed);
          m_webSocket.open(QUrl(url));
      }

      void EchoClient::onConnected()
      {
          if (m_debug)
              qDebug() << "WebSocket connected";
          connect(&m_webSocket, &QWebSocket::textMessageReceived,
                  this, &EchoClient::onTextMessageReceived);
          m_webSocket.sendTextMessage(QStringLiteral("Hello, world!"));
      }

      void EchoClient::onTextMessageReceived(QString message)
      {
          if (m_debug)
              qDebug() << "Message received:" << message;
          m_webSocket.close();
      }