How can a QWebSocketServer identify messages from multiple HTML clients and answer each separately?

[Lingfa]

Refer to "Qt WebChannel Standalone Example"
Step 1: setup the QWebSocketServer

    m_server = new QWebSocketServer("WebSocket app", QWebSocketServer::NonSecureMode, this);
    if (!m_server->listen(QHostAddress::LocalHost, 12345)) {
        qFatal("Failed to open web socket server, probabaly caused by an existing instance!");
        return;
    }

Step 2: setup the channel

    m_channel = new QWebChannel(this);

    // setup the core and publish it to the QWebChannel
    m_channel->registerObject(QStringLiteral("core"), m_jsHelper);
    connect(m_server, SIGNAL(newConnection()), this, SLOT(newConnection()));

Step 3: handle incoming socket

void MainWindow::newConnection()
{
    QWebSocket *socket = m_server->nextPendingConnection();
    QWebChannelAbstractTransport *t = new WebSocketTransport(socket);
    m_channel->connectTo(t);
    connect(t, SIGNAL(messageReceived(QJsonObject,QWebChannelAbstractTransport*)),
            this, SLOT(messageReceived(QJsonObject,QWebChannelAbstractTransport*)));
}

Step 4: open two browsers, both load same index.html, which contains a connection from C++ signal trigger to a JavaScript function:

                        core.sendText.connect(function(message) {// sendText is a C++ signal
                            output("Received message: " + message);
                        });

In this way, one server emits one sendText message which will display in multiple browser clients.
My question is each client can send its own question to the server, is there a way the server can answer each client separately and only?

[Lingfa]

Here is source code repository

[Lingfa]

Solved by 1) when a new client comes in, store WebSocketTransport in a list. 2) upon WebSocketTransport::textMessageReceived() trigger MainWindow::messageReceived() where indexing m_currentTransport. 3) Instead of sentText() use m_currentTransport->sendPlainTextMessage(text); to reply.

Source code detail: git clone https://Lingfa@bitbucket.org/Lingfa/htmlchat.git