@SuppressWarnings("deprecation") private static Set<TransportHandler> getDefaultTransportHandlers(@Nullable Collection<TransportHandler> overrides) { Set<TransportHandler> result = new LinkedHashSet<>(8); result.add(new XhrPollingTransportHandler()); result.add(new XhrReceivingTransportHandler()); result.add(new XhrStreamingTransportHandler()); result.add(new JsonpPollingTransportHandler()); result.add(new JsonpReceivingTransportHandler()); result.add(new EventSourceTransportHandler()); result.add(new HtmlFileTransportHandler()); try { result.add(new WebSocketTransportHandler(new DefaultHandshakeHandler())); } catch (Exception ex) { Log logger = LogFactory.getLog(DefaultSockJsService.class); if (logger.isWarnEnabled()) { logger.warn("Failed to create a default WebSocketTransportHandler", ex); } } if (overrides != null) { result.addAll(overrides); } return result; }
@Override @Nullable protected String[] readMessages(ServerHttpRequest request) throws IOException { SockJsMessageCodec messageCodec = getServiceConfig().getMessageCodec(); MediaType contentType = request.getHeaders().getContentType(); if (contentType != null && MediaType.APPLICATION_FORM_URLENCODED.isCompatibleWith(contentType)) { MultiValueMap<String, String> map = this.formConverter.read(null, request); String d = map.getFirst("d"); return (StringUtils.hasText(d) ? messageCodec.decode(d) : null); } else { return messageCodec.decodeInputStream(request.getBody()); } }