Jetty and Websocket, warning abotu status code >400

[survivant]

I received lot of WARN about this : 

87625 [qtp9820728-21] WARN org.atmosphere.websocket.protocol.SimpleHttpProtocol - Status code higher than 400 Status 400 Message Invalid websocket transport request

but my status code is = 400.

here the code

/**
     * Dispatch to request/response to the {@link org.atmosphere.cpr.AsyncSupport} implementation as it was a normal HTTP request.
     *
     * @param request a {@link AtmosphereRequest}
     * @param r       a {@link AtmosphereResponse}
     */
    protected final void dispatch(final AtmosphereRequest request, final AtmosphereResponse r) {
        if (request == null) return;
        try {
            framework.doCometSupport(request, r);
        } catch (Throwable e) {
            logger.warn("Failed invoking AtmosphereFramework.doCometSupport()", e);
            webSocketProtocol.onError(webSocket, new WebSocketException(e,
                    new AtmosphereResponse.Builder()
                            .request(request)
                            .status(500)
                            .statusMessage("Server Error").build()));
            return;
        }

        AtmosphereResource resource = (AtmosphereResource) request.getAttribute(FrameworkConfig.ATMOSPHERE_RESOURCE);

        if (r.getStatus() >= 400) {
            webSocketProtocol.onError(webSocket, new WebSocketException("Status code higher than 400", r));
        }

        if (webSocket.resource() == null && WebSocketAdapter.class.isAssignableFrom(webSocket.getClass())) {
            WebSocketAdapter.class.cast(webSocket).setAtmosphereResource(resource);
        }
    }

here the stack


Thread [qtp9820728-16] (Suspended (breakpoint at line 151 in SimpleHttpProtocol))   
    SimpleHttpProtocol.onError(WebSocket, WebSocketProcessor$WebSocketException) line: 151  
    WebSocketProcessor.dispatch(AtmosphereRequest, AtmosphereResponse) line: 192    
    WebSocketProcessor$2.run() line: 153    
    VoidExecutorService.execute(Runnable) line: 101 
    WebSocketProcessor.dispatch(List<AtmosphereRequest>) line: 148  
    WebSocketProcessor.invokeWebSocketProtocol(String) line: 136    
    JettyWebSocketHandler.onMessage(String) line: 110   
    WebSocketConnectionD08$WSFrameHandler.onFrame(byte, byte, Buffer) line: 749 
    WebSocketParserD08.parseNext() line: 347    
    WebSocketServletConnectionD08(WebSocketConnectionD08).handle() line: 204    
    SelectChannelEndPoint.handle() line: 606    
    SelectChannelEndPoint$1.run() line: 46  
    QueuedThreadPool.runJob(Runnable) line: 603 
    QueuedThreadPool$3.run() line: 538  
    Thread.run() line: not available    

[jfarcand]

Thanks