Node.js Ocpp memory leak

March 23, 2023

I want to create OCPP JSON central system in Node.js. For OCPP 1.6 implementation, there are packages with good examples. But for OCPP2.0 I’ve found only ocpp-rpc and faced huge memory leaks on high number of connections. Is there any others packages? Thanks

That’s what i’ve tried:

const server = new RPCServer({
        protocols: ['ocpp2.0.1'],
        strictMode: true,
    });

    server.auth((accept, reject, handshake) => {
        accept({
            sessionId: 'XYZ123'
        });
    });

    server.on('client', async (client) => {
        client.handle('BootNotification', ({params}) => {
            return {
                status: "Accepted",
                interval: 300,
                currentTime: new Date().toISOString()
            };
        });
    });
    await server.listen(3000);

>Solution :

Try @extrawest/node-ts-ocpp

Your implementation will look like

const centralSystemSimple = new OcppServer();
centralSystemSimple.listen(parseInt(process.env.PORT) || 3000);
centralSystemSimple.on('connection', (client: OcppClientConnection) => {
    client.on('BootNotification', (request: BootNotificationRequest, cb: (response: BootNotificationResponse) => void) => {
        const response: BootNotificationResponse = {
            status: 'Accepted',
            currentTime: new Date().toISOString(),
            interval: parseInt(process.env.HEARTBEAT_INTERVAL),
        };
        cb(response);
    });
});