Spring consume websocket

Hi, Sorry for disturbing you and thank you for your incredible work.

I'm a bit stuck.
from my "spring boot" gateway, I try to add positions to a device via the websocket.

I provide my code below. The connection is fine. The session is recovered but when I want to send a new position, nothing happens. The traccar server logs nothing, no error, and my breakpoints that I set on my browser in the "onmessage" method of the Root file are never reached.

My question is, is it possible to add positions/devices and send alerts via the websocket? If so, do you have any idea where my problem could come from?

Thanks a lot.

@ClientEndpoint
public class WebsocketClientEndpoint extends Endpoint {

    private Logger logger = Logger.getLogger(this.getClass().getName());
    @Value("${traccar.token}")
    private String token;
    Session session = null;


    public WebsocketClientEndpoint(String endpointURI) {
        //start connection
        javax.websocket.WebSocketContainer container = javax.websocket.ContainerProvider.getWebSocketContainer();
        try {
            ClientEndpointConfig.Configurator configurator = new ClientEndpointConfig.Configurator() {
                public void beforeRequest(Map headers) {
                    headers.put("Cookie", Arrays.asList(buildCookie(token)));
                    headers.put("Authorization", Arrays.asList(buildBearer(token)));
                }
            };
            ClientEndpointConfig clientConfig = ClientEndpointConfig.Builder.create()
                    .configurator(configurator)
                    .build();

            session = container.connectToServer(this,clientConfig, new URI(endpointURI));
            session.setMaxIdleTimeout(0);
        } catch (Exception e) {
            e.printStackTrace();
        }
    }

    @Override
    public void onOpen(Session session, EndpointConfig config) {
        logger.info("Client onOpen..." + session.getId());


        this.session = session;
    }

    @OnMessage
    public void onMessage(String message, Session session) {
        logger.info("Response log: " + message);
    }

    @Override
    public void onClose(Session session, CloseReason closeReason) {
        logger.info(String.format("Session %s close because of %s", session.getId(), closeReason));
    }

    public void sendMessage(Position position) {
        if (session != null) {
            String json2 = "{\"positions\":[ { \"temp\",\"content\":\"temp2\" } ]}";
            try {
                this.session.getBasicRemote().sendText(json2);
            } catch (IOException e) {
                throw new RuntimeException(e);
            }
        }
    }
}

(The variable "json2" is just fake data just to test if the server got the data)

Thank you

You can't send positions via WebSocket. It's only for receiving data from the server.

Hi, okai, thank you for you response.