Examples of org.springframework.web.socket.WebSocketHandler

org.springframework.web.socket.WebSocketHandler
A handler for WebSocket messages and lifecycle events.
Implementations of this interface are encouraged to handle exceptions locally where it makes sense or alternatively let the exception bubble up in which case by default the exception is logged and the session closed with {@link CloseStatus#SERVER_ERROR SERVER_ERROR(1011)}. The exception handling strategy is provided by {@link org.springframework.web.socket.handler.ExceptionWebSocketHandlerDecorator ExceptionWebSocketHandlerDecorator} and it can be customized or replaced by decoratingthe {@link WebSocketHandler} with a different decorator. @author Rossen Stoyanchev @author Phillip Webb @since 4.0

  }




  private void handleRequest(AbstractHttpReceivingTransportHandler transportHandler) throws Exception {


    WebSocketHandler wsHandler = mock(WebSocketHandler.class);
    AbstractSockJsSession session = new TestHttpSockJsSession("1", new StubSockJsServiceConfig(), wsHandler, null);


    transportHandler.initialize(new StubSockJsServiceConfig());
    transportHandler.handleRequest(this.request, this.response, wsHandler, session);

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  private void handleRequestAndExpectFailure() throws Exception {


    resetResponse();


    WebSocketHandler wsHandler = mock(WebSocketHandler.class);
    AbstractSockJsSession session = new TestHttpSockJsSession("1", new StubSockJsServiceConfig(), wsHandler, null);


    new XhrReceivingTransportHandler().handleRequest(this.request, this.response, wsHandler, session);


    assertEquals(500, this.servletResponse.getStatus());

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    assertEquals(stompHandler.getSupportedProtocols(), sockJsHandler.getSubProtocols());
  }


  @Test
  public void getSubProtocolsNone() throws Exception {
    WebSocketHandler handler = new TextWebSocketHandler();
    TaskScheduler scheduler = mock(TaskScheduler.class);
    DefaultSockJsService service = new DefaultSockJsService(scheduler);
    WebSocketServerSockJsSession session = new WebSocketServerSockJsSession("1", service, handler, null);
    SockJsWebSocketHandler sockJsHandler = new SockJsWebSocketHandler(service, handler, session);

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   * checking whether it is an instance of {@link SubProtocolCapable}.
   * @param handler the handler to check
   * @return a list of supported protocols, or an empty list if none available
   */
  protected final List<String> determineHandlerSupportedProtocols(WebSocketHandler handler) {
    WebSocketHandler handlerToCheck = WebSocketHandlerDecorator.unwrap(handler);
    List<String> subProtocols = null;
    if (handlerToCheck instanceof SubProtocolCapable) {
      subProtocols = ((SubProtocolCapable) handlerToCheck).getSubProtocols();
    }
    return (subProtocols != null ? subProtocols : Collections.<String>emptyList());

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    WebSocketSession session = new TestWebSocketSession("id");
    wsHttpRequestHandler.getWebSocketHandler().afterConnectionEstablished(session);
    assertEquals(true, session.getAttributes().get("decorated"));


    WebSocketHandler wsHandler = unwrapWebSocketHandler(wsHttpRequestHandler.getWebSocketHandler());
    assertNotNull(wsHandler);
    assertThat(wsHandler, Matchers.instanceOf(SubProtocolWebSocketHandler.class));


    SubProtocolWebSocketHandler subProtocolWsHandler = (SubProtocolWebSocketHandler) wsHandler;
    assertEquals(Arrays.asList("v10.stomp", "v11.stomp", "v12.stomp"), subProtocolWsHandler.getSubProtocols());

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    HttpRequestHandler httpRequestHandler = (HttpRequestHandler) suhm.getUrlMap().get("/foo/**");
    assertNotNull(httpRequestHandler);
    assertThat(httpRequestHandler, Matchers.instanceOf(SockJsHttpRequestHandler.class));
    SockJsHttpRequestHandler sockJsHttpRequestHandler = (SockJsHttpRequestHandler) httpRequestHandler;
    WebSocketHandler wsHandler = unwrapWebSocketHandler(sockJsHttpRequestHandler.getWebSocketHandler());
    assertNotNull(wsHandler);
    assertThat(wsHandler, Matchers.instanceOf(SubProtocolWebSocketHandler.class));
    assertNotNull(sockJsHttpRequestHandler.getSockJsService());


    UserDestinationResolver userDestResolver = this.appContext.getBean(UserDestinationResolver.class);

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      this.factories = factories;
    }


    @Override
    public WebSocketHandler getObject() throws Exception {
      WebSocketHandler result = this.handler;
      for (WebSocketHandlerDecoratorFactory factory : this.factories) {
        result = factory.decorate(result);
      }
      return result;
    }

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    requestHeaders.set("foo", "bar");


    TestXhrTransport transport = new TestXhrTransport();
    transport.setRequestHeaders(requestHeaders);


    WebSocketHandler handler = mock(WebSocketHandler.class);
    transport.connect(request, handler);


    ArgumentCaptor<Runnable> captor = ArgumentCaptor.forClass(Runnable.class);
    verify(request).getSockJsUrlInfo();
    verify(request).addTimeoutTask(captor.capture());

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  }


  @Test
  public void webSocketHandlerDecorator() throws Exception {
    ApplicationContext config = createConfig(WebSocketHandlerDecoratorConfig.class);
    WebSocketHandler handler = config.getBean(SubProtocolWebSocketHandler.class);
    assertNotNull(handler);


    SimpleUrlHandlerMapping mapping = (SimpleUrlHandlerMapping) config.getBean("stompWebSocketHandlerMapping");
    WebSocketHttpRequestHandler httpHandler = (WebSocketHttpRequestHandler) mapping.getHandlerMap().get("/test");
    handler = httpHandler.getWebSocketHandler();


    WebSocketSession session = new TestWebSocketSession("id");
    handler.afterConnectionEstablished(session);
    assertEquals(true, session.getAttributes().get("decorated"));
  }

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    this.registration = new TestWebSocketHandlerRegistration(taskScheduler);
  }


  @Test
  public void minimal() {
    WebSocketHandler handler = new TextWebSocketHandler();
    this.registration.addHandler(handler, "/foo", "/bar");


    List<Mapping> mappings = this.registration.getMappings();
    assertEquals(2, mappings.size());

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org.springframework.session.web.socket.handler.WebSocketConnectHandlerDecoratorFactoryTests

org.springframework.web.socket.client.WebSocketConnectionManagerTests

org.springframework.web.socket.config.annotation.WebMvcStompEndpointRegistry

org.springframework.web.socket.config.annotation.WebSocketHandlerRegistrationTests

org.springframework.web.socket.config.annotation.WebSocketMessageBrokerConfigurationSupport

org.springframework.web.socket.config.annotation.WebSocketMessageBrokerConfigurationSupportTests

org.springframework.web.socket.config.MessageBrokerBeanDefinitionParser$DecoratingFactoryBean

org.springframework.web.socket.config.MessageBrokerBeanDefinitionParserTests

org.springframework.web.socket.handler.PerConnectionWebSocketHandler

org.springframework.web.socket.handler.WebSocketHandlerDecorator

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