Problem with WebSockets in openHab2, Endless onMessage() calles


i hope i have choose the right community to offer my problem.
Actually i try to subscribe a item State with atmosphere.js (Websocket)
My problem is the onMessage-Function is called every time even if no item state is changed.

Can someone help me to fix my problem?

Build #657

Example code:

var socket = require('atmosphere.js');

var headers = {};
headers["Accept"] = "application/json";

var oldState = '';

var request = {
    url: 'http://localhost:8080/rest/items/hue_0200_0017882d39af_3_color',
    contentType : "application/json",
    transport: 'websocket',
    headers: headers,
    attachHeadersAsQueryString: true

request.onMessage = function (response) {
    var message = response.responseBody;
    var obj = JSON.parse(message);
    console.log("State changed to");

var subSocket = socket.subscribe(request);

Thank you. Regards

In openhab2 it is SEE.

Thanks it works now