chatserver.cpp Example File | Qt WebSockets 5.4

- Qt 5.4
- Qt WebSockets
- Simple Chat Example
- chatserver.cpp Example File
- Qt 5.4.2 Reference Documentation

# chatserver.cpp Example File

simplechat/chatserver.cpp

    /****************************************************************************
    **
    ** Copyright (C) 2014 Kurt Pattyn <pattyn.kurt@gmail.com>.
    ** Contact: http://www.qt-project.org/legal
    **
    ** 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 Digia. For licensing terms and
    ** conditions see http://qt.digia.com/licensing. For further information
    ** use the contact form at http://qt.digia.com/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.
    **
    ** In addition, as a special exception, Digia gives you certain additional
    ** rights. These rights are described in the Digia Qt LGPL Exception
    ** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
    **
    ** $QT_END_LICENSE$
    **
    ****************************************************************************/
    #include "chatserver.h"
    #include "QtWebSockets/QWebSocketServer"
    #include "QtWebSockets/QWebSocket"
    #include <QtCore/QDebug>

    QT_USE_NAMESPACE

    ChatServer::ChatServer(quint16 port, QObject *parent) :
        QObject(parent),
        m_pWebSocketServer(Q_NULLPTR),
        m_clients()
    {
        m_pWebSocketServer = new QWebSocketServer(QStringLiteral("Chat Server"),
                                                  QWebSocketServer::NonSecureMode,
                                                  this);
        if (m_pWebSocketServer->listen(QHostAddress::Any, port))
        {
            qDebug() << "Chat Server listening on port" << port;
            connect(m_pWebSocketServer, &QWebSocketServer::newConnection,
                    this, &ChatServer::onNewConnection);
        }
    }

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

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

        connect(pSocket, &QWebSocket::textMessageReceived, this, &ChatServer::processMessage);
        connect(pSocket, &QWebSocket::disconnected, this, &ChatServer::socketDisconnected);

        m_clients << pSocket;
    }

    void ChatServer::processMessage(QString message)
    {
        QWebSocket *pSender = qobject_cast<QWebSocket *>(sender());
        Q_FOREACH (QWebSocket *pClient, m_clients)
        {
            if (pClient != pSender) //don't echo message back to sender
            {
                pClient->sendTextMessage(message);
            }
        }
    }

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