WebSocket connection error WebSocketException: The status line of the opening handshake response is empty

nagappan08

We are using the below way of conneecting and generating the session

String clientId = "xxx";
       SmartConnect smartConnect = new SmartConnect();
       String apiKey = "xxx";
       // Provide your API key here
       smartConnect.setApiKey(apiKey);
       User user = smartConnect.generateSession(clientId, "xxx", tOtp);
       System.out.println("jwt token : "+  user.getAccessToken());
       String jwtToken = user.getAccessToken();

Then we need to connect the websocket with the user details as below:

public void smartWebSocketUsage(String clientId, String jwtToken, String apiKey, String actionType, String feedType)
            throws SmartAPIException {

        SmartWebsocket smartWebsocket = new SmartWebsocket(clientId, jwtToken, apiKey, actionType, feedType);

        smartWebsocket.setOnConnectedListener(new SmartWSOnConnect() {

            @Override
            public void onConnected() {
                System.out.println("smart web socket connected..");
                smartWebsocket.runscript();
            }
        });

        smartWebsocket.setOnDisconnectedListener(new SmartWSOnDisconnect() {
            @Override
            public void onDisconnected() {
                System.out.println("onDisconnected");
            }
        });

        /** Set error listener to listen to errors. */
        smartWebsocket.setOnErrorListener(new SmartWSOnError() {
            @Override
            public void onError(Exception exception) {
                System.out.println("onError: " + exception.getMessage());
            }

            @Override
            public void onError(SmartAPIException smartAPIException) {
                System.out.println("onError: " + smartAPIException.getMessage());
            }

            @Override
            public void onError(String error) {
                System.out.println("onError: " + error);
            }
        });

        smartWebsocket.setOnTickerArrivalListener(new SmartWSOnTicks() {
            @Override
            public void onTicks(JSONArray ticks) {
                System.out.println("ticker data: " + ticks.toString());
            }
        });

        /**
         * connects to SmartAPI ticker server for getting live quotes
         */
        smartWebsocket.connect();

While connecting the websocket, we are facing this issue.. "opening handshake response is empty.."