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// Copyright (C) 2016 Klarälvdalens Datakonsult AB, a KDAB Group company, info@kdab.com, author Milian Wolff <milian.wolff@kdab.com>
// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR BSD-3-Clause
#include "websockettransport.h"
#include <QDebug>
#include <QJsonDocument>
#include <QJsonObject>
#include <QWebSocket>
/*!
\brief QWebChannelAbstractSocket implementation that uses a QWebSocket internally.
The transport delegates all messages received over the QWebSocket over its
textMessageReceived signal. Analogously, all calls to sendTextMessage will
be send over the QWebSocket to the remote client.
*/
/*!
Construct the transport object and wrap the given socket.
The socket is also set as the parent of the transport object.
*/
WebSocketTransport::WebSocketTransport(QWebSocket *socket)
: QWebChannelAbstractTransport(socket)
, m_socket(socket)
{
connect(socket, &QWebSocket::textMessageReceived,
this, &WebSocketTransport::textMessageReceived);
connect(socket, &QWebSocket::disconnected,
this, &WebSocketTransport::deleteLater);
}
/*!
Destroys the WebSocketTransport.
*/
WebSocketTransport::~WebSocketTransport()
{
m_socket->deleteLater();
}
/*!
Serialize the JSON message and send it as a text message via the WebSocket to the client.
*/
void WebSocketTransport::sendMessage(const QJsonObject &message)
{
QJsonDocument doc(message);
m_socket->sendTextMessage(QString::fromUtf8(doc.toJson(QJsonDocument::Compact)));
}
/*!
Deserialize the stringified JSON messageData and emit messageReceived.
*/
void WebSocketTransport::textMessageReceived(const QString &messageData)
{
QJsonParseError error;
QJsonDocument message = QJsonDocument::fromJson(messageData.toUtf8(), &error);
if (error.error) {
qWarning() << "Failed to parse text message as JSON object:" << messageData
<< "Error is:" << error.errorString();
return;
} else if (!message.isObject()) {
qWarning() << "Received JSON message that is not an object: " << messageData;
return;
}
emit messageReceived(message.object(), this);
}
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