My error shows up in the console of my browser:

"WebSocket connection to 'ws://localhost:32768/DspClusterWebServices/myHandler' failed: Unexpected response code: 200"

I am using Spring Websockets 4.1.5 and Tomcat 8.0.18. My WebSocketConfigurer implementation class looks like:

@Configuration
@Controller
@EnableWebSocket
public class WebSocketConfig implements WebSocketConfigurer
{
   class MyHandler implements WebSocketHandler
   {
      @Override
      public void afterConnectionEstablished(WebSocketSession session) throws Exception
      {
         System.out.println("afterConntectionEstablished called");
      }

       ...implements rest of functions with a System.out.println and false for supportsPartialMessages()

      }
   }

   @Override registerWebSocketHandlers(WebSocketHandlerRegistry registry)
   {
      registry.addHandler(myHandler(), "myHandler").withSockJS();
   }

   @Bean
   public WebSocketHandler myHandler()
   {
      return new MyHandler();
   }
}

My testWebsocketClient.js tries to connect with this code, but has a error code of 200:

websocket = new WebSocket("ws://localhost:8080/myApp/myHandler");

I cannot figure out what to try next. I thought that this would cause the afterConnectionEstablished(WebSocketSession session) method to fire? Isn't code 200 good?