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Implement ping pong in timer for keeping connection alive #28

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Implement ping pong in timer for keeping connection alive #28

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36 changes: 33 additions & 3 deletions c++/qt.cpp
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Original file line number Diff line number Diff line change
Expand Up @@ -10,14 +10,20 @@ class AisStreamClient : public QObject
public:
explicit AisStreamClient(QObject* parent = nullptr);

private Q_SLOTS:
// private Q_SLOTS:
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@aisstream aisstream May 11, 2025

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void onConnected();
void onTextMessageReceived(QString message);
void onBinaryMessageReceived(const QByteArray& message);
void onSslErrors(const QList<QSslError>& errors);
void onError(QAbstractSocket::SocketError e);
void onPong(quint64 elapsedTime, const QByteArray &payload);

private:

void timerEvent(QTimerEvent *event) override;

private:
QWebSocket m_webSocket;

};

#include "qt.moc"
Expand All @@ -27,19 +33,43 @@ AisStreamClient::AisStreamClient(QObject* parent)
{
connect(&m_webSocket, &QWebSocket::connected, this, &AisStreamClient::onConnected);
connect(&m_webSocket, QOverload<const QList<QSslError>&>::of(&QWebSocket::sslErrors), this, &AisStreamClient::onSslErrors);
connect(&m_webSocket, &QWebSocket::pong, this, &AisStreamClient::onPong);
QSslConfiguration sslConfiguration;
m_webSocket.setSslConfiguration(sslConfiguration);
m_webSocket.open(QUrl("wss://stream.aisstream.io/v0/stream"));
}

void AisStreamClient::onPong(quint64 , const QByteArray &)
{
qDebug() << "pong ";
}

void AisStreamClient::timerEvent(QTimerEvent *)
{
qDebug() << "ping";
m_webSocket.ping();
}

void AisStreamClient::onConnected()
{
qDebug() << "WebSocket connected";
connect(&m_webSocket, &QWebSocket::textMessageReceived, this, &AisStreamClient::onTextMessageReceived);
connect(&m_webSocket,
static_cast<void (QWebSocket::*)(QAbstractSocket::SocketError)>(&QWebSocket::errorOccurred), this,
&AisStreamClient::onError);
connect(&m_webSocket, &QWebSocket::binaryMessageReceived, this, &AisStreamClient::onBinaryMessageReceived);
m_webSocket.sendTextMessage(QStringLiteral("{ \"APIKey\": \"<YOUR API KEY>\", \"BoundingBoxes\": [[[-11.0, 178.0], [30.0, 74.0]]]}"));
m_webSocket.sendTextMessage(QStringLiteral("{ \"APIKey\": \"<YOUR API KEY>\", \"FilterMessageTypes\": [\"PositionReport\"] ,\"BoundingBoxes\": [[[65, 17], [53, 23]]]}"));

// Need to ping pong to have the connection alive
startTimer(1000* 60 );
}

void AisStreamClient::onError(QAbstractSocket::SocketError e)
{
qDebug() << "Error " << e;
}


void AisStreamClient::onTextMessageReceived(QString message)
{
qDebug() << "Message received:" << message;
Expand Down