when i try to send auth headers via stomp java fx client, they are not passed to the spring boot backend.
Client:
String URL = 'wss://myurl.de/wsconnection'
WebSocketClient client = new StandartWebSocketClient(client);
WebSocketStompClient stompClient = new WebSocketStompClient(client);
stompClient.setMessageConverter(new MappingJackson2MessageConverter());
StompSessionHandler sessionHandler = new MyStompSessionHandler();
StompHeaders headers = new Headers();
headers.set("Authorization", "Bearer myToken")
headers.setLogin("Bearer myToken")
stompClient.connect(URL, sessionHandler,headers);
I tried two ways: using the login header method and custom Authorization header. So in the backend i try to get a jwt through one of these two headers. Unfortunatly the jwt value is always null so not passed.
Backend:
#Configuration
public class WebSocketSecurityConf extends AbstractSecurityWebSocketMessageBrokerConfigurer {
#Override
protected void configureInbound(MessageSecurityMetadataSourceRegistry messages) {
messages.anyMessage().permitAll();
}
#Override
protected boolean sameOriginDisabled() {
return true;
}
}
#Configuration
#EnableWebSocketMessageBroker
public class WebSocketConfig extends AbstractWebSocketMessageBrokerConfigurer {
#Override
public void configureClientInboundChannel(ChannelRegistration registration) {
registration.setInterceptors(new ChannelInterceptorAdapter() {
#Override
public Message<?> preSend(Message<?> message, MessageChannel channel) {
StompHeaderAccessor accessor = MessageHeaderAccessor.getAccessor(message, StompHeaderAccessor.class);
if (StompCommand.CONNECT.equals(accessor.getCommand())) {
String jwtToken;
jwtToken = accessor.getFirstNativeHeader("Authorization");
if(jwtToken == null){
jwtToken = accessor.getFirstNativeHeader("login");
}
System.out.println("webSocket token is "+ jwtToken);
System.out.println("accessor header "+ accessor.getMessageHeaders());
Any ideas here?
You have mixed up the order of the parameters here: stompClient.connect(URL, sessionHandler,headers); Headers should be before handler.
Here is from spring sources:
public ListenableFuture<StompSession> connect(String url, #Nullable WebSocketHttpHeaders handshakeHeaders,
#Nullable StompHeaders connectHeaders, StompSessionHandler handler, Object... uriVariables)
Related
I looked and tried a lot but I can not find the cause of my problem...
I have a JHipster generated application which consists out of a spring boot application and an angular frontend and I want to use websockets for updates. For that I use Stomp and SockJs
The connection itself is already not working.
I get the following error:
WebSocket connection to 'ws://localhost:9000/updates/websocket/447/xxudq4ni/websocket' failed: WebSocket is closed before the connection is established.
This is the call to port 9000, which is then proxied to the actual backend under Port 8080.
If I call the backend under port 8080 directly, I get:
WebSocket connection to 'ws://localhost:8080/updates/websocket/156/mg0dspp2/websocket' failed: Error during WebSocket handshake: Unexpected response code: 200
I do not really see what the actual response is but I suppose it is the JHIpster error message "an error has occured" and this html is returned with a http statuscode of 200.
I'm out of ideas what the actual problem is... I followed this intro here and several others...
here is my backend:
WebsocketConfig:
#Configuration
#EnableWebSocketMessageBroker
public class WebSocketConfig implements WebSocketMessageBrokerConfigurer {
public static final String IP_ADDRESS = "IP_ADDRESS";
#Override
public void configureMessageBroker(MessageBrokerRegistry config) {
config.enableSimpleBroker("/topic");
}
#Override
public void registerStompEndpoints(StompEndpointRegistry registry) {
registry
.addEndpoint("/updates/websocket")
//.setHandshakeHandler(defaultHandshakeHandler())
.setAllowedOrigins("*")
.withSockJS()
.setClientLibraryUrl("https://cdn.jsdelivr.net/npm/sockjs-client#1.5.0/dist/sockjs.min.js");
//.setInterceptors(httpSessionHandshakeInterceptor());
}
private DefaultHandshakeHandler defaultHandshakeHandler() {
return new DefaultHandshakeHandler() {
#Override
protected Principal determineUser(ServerHttpRequest request, WebSocketHandler wsHandler, Map<String, Object> attributes) {
Principal principal = request.getPrincipal();
if (principal == null) {
Collection<SimpleGrantedAuthority> authorities = new ArrayList<>();
authorities.add(new SimpleGrantedAuthority(AuthoritiesConstants.ANONYMOUS));
principal = new AnonymousAuthenticationToken("WebsocketConfiguration", "anonymous", authorities);
}
return principal;
}
};
}
#Bean
public HandshakeInterceptor httpSessionHandshakeInterceptor() {
return new HandshakeInterceptor() {
#Override
public boolean beforeHandshake(
ServerHttpRequest request,
ServerHttpResponse response,
WebSocketHandler wsHandler,
Map<String, Object> attributes
) throws Exception {
if (request instanceof ServletServerHttpRequest) {
ServletServerHttpRequest servletRequest = (ServletServerHttpRequest) request;
attributes.put(IP_ADDRESS, servletRequest.getRemoteAddress());
}
return true;
}
#Override
public void afterHandshake(
ServerHttpRequest request,
ServerHttpResponse response,
WebSocketHandler wsHandler,
Exception exception
) {}
};
}
}
Controller:
#Controller
public class UpdateController {
private static final Logger log = LoggerFactory.getLogger(UpdateController.class);
#MessageMapping("/updates/websocket")
#SendTo("/topic/trucks")
public UpdateDto send(UpdateDto dto) {
return dto;
}
}
Frontend:
connect(): void {
if (this.stompClient?.connected || this.called) {
return;
}
this.called = true;
// building absolute path so that websocket doesn't fail when deploying with a context path
let url = '/updates/websocket';
url = this.location.prepareExternalUrl(url);
var socket = new SockJS(url);
this.stompClient = Stomp.over(socket);
this.stompClient.connect({}, (frame) => {
this.connectionSubject.next();
this.sendActivity();
this.routerSubscription = this.router.events
.pipe(filter((event: Event) => event instanceof NavigationEnd))
.subscribe(() => this.sendActivity());
}, error => {
console.log(error);
});
}
Im on Windows and I use Chrome for the development. But it also does not work in FireFox, so I do not think it has something to do with the platform.
Any help would be very much appreciated. Thank you very much!
I'm experiencing a slow Stomp connection between two Spring microservices, the client takes about 5 minutes to send the CONNECT Stomp message. Both microservices run on the same node.
Spring Boot version: 2.1.3.RELEASE
The Websocket server is configured in the following way:
#Configuration
#EnableWebSocketMessageBroker
public class WebSocketConfig implements WebSocketMessageBrokerConfigurer {
#Override
public void configureMessageBroker(MessageBrokerRegistry config) {
config.enableSimpleBroker("/topic");
config.setApplicationDestinationPrefixes("/app");
}
#Override
public void registerStompEndpoints(StompEndpointRegistry registry) {
registry.addEndpoint("/ws-subscribe").setAllowedOrigins("*").withSockJS();
}
}
The client is configured this way:
#Component
public class WebsocketClient {
private GlobalConfiguration globalConfiguration;
private WebsocketListener websocketListener;
private WebSocketStompClient stompClient;
#Autowired
private JwtTokenGenerator jwtTokenGenerator;
private ApplicationContext appContext;
private Logger LOGGER = LoggerFactory.getLogger(WebsocketClient.class);
#Autowired
public WebsocketClient(ApplicationContext context,GlobalConfiguration globalConfiguration) {
Transport webSocketTransport = new WebSocketTransport(new StandardWebSocketClient());
List<Transport> transports = Collections.singletonList(webSocketTransport);
SockJsClient sockJsClient = new SockJsClient(transports);
sockJsClient.setMessageCodec(new Jackson2SockJsMessageCodec());
this.stompClient = new WebSocketStompClient(sockJsClient);
this.globalConfiguration = globalConfiguration;
this.websocketListener = new WebsocketListener(context);
}
public ListenableFuture<StompSession> connectToWebsocket(){
String url = globalConfiguration.getOrchestratorWs();
StompHeaders connectHeaders = new StompHeaders();
WebSocketHttpHeaders webSocketHttpHeaders = new WebSocketHttpHeaders();
webSocketHttpHeaders.add("Authorization",jwtTokenGenerator.token);
LOGGER.info("webSocketHttpHeaders: " + webSocketHttpHeaders.toString());
LOGGER.info("url: " + url);
this.stompClient.setMessageConverter(new MappingJackson2MessageConverter());
return stompClient.connect(url,webSocketHttpHeaders,connectHeaders, websocketListener);
}
}
And client-side we have this Websocket listener:
public class WebsocketListener extends StompSessionHandlerAdapter {
private static final Logger LOGGER = LoggerFactory.getLogger(WebsocketListener.class);
private GlobalConfiguration globalConfiguration;
private ApplicationContext appContext;
public WebsocketListener(ApplicationContext appContext) {
this.appContext = appContext;
this.globalConfiguration = appContext.getBean(GlobalConfiguration.class);
}
#Override
public void afterConnected(StompSession session, StompHeaders connectedHeaders) {
LOGGER.info("New session established : " + globalConfiguration.getId());
session.subscribe("/topic/injections/"+globalConfiguration.getId(), this);
LOGGER.info("Subscribed to /topic/injections/"+globalConfiguration.getId());
// session.send("/app/chat", getSampleMessage());
// logger.info("Message sent to websocket server");
}
#Override
public void handleException(StompSession session, StompCommand command, StompHeaders headers, byte[] payload, Throwable exception) {
LOGGER.error("Got an exception", exception);
}
#Override
public Type getPayloadType(StompHeaders headers) {
return Map.class;
}
#Override
public void handleFrame(StompHeaders headers, Object payload) {
LOGGER.info("Injection Received : " + payload);
InjectionHandler injectionHandler = new InjectionHandler(appContext,(HashMap) payload);
injectionHandler.start();
}
}
The afterConnected is invoked about 5 minutes after the ws://10.2.0.43:7071/ws-subscribe/513/8306a7ac357847678795b049450fb6c5/websocket
Inspecting the source code of the Stomp library, I saw that the code where the microservice remains stuck for those 5 minutes is the following:
public ListenableFuture<StompSession> connect(URI url, #Nullable WebSocketHttpHeaders handshakeHeaders, #Nullable StompHeaders connectHeaders, StompSessionHandler sessionHandler) {
Assert.notNull(url, "'url' must not be null");
ConnectionHandlingStompSession session = this.createSession(connectHeaders, sessionHandler);
WebSocketStompClient.WebSocketTcpConnectionHandlerAdapter adapter = new WebSocketStompClient.WebSocketTcpConnectionHandlerAdapter(session);
this.getWebSocketClient().doHandshake(adapter, handshakeHeaders, url).addCallback(adapter);
return session.getSessionFuture();
}
In particular, the session.getSessionFuture() call.
Any idea on what may cause the delay in the CONNECT message sent by the client?
I'm trying to implement a 1-1 chat for a mobile app(ionic 3) with a spring boot back-end. Seems like run into some config problems.
Can't send message probably because the target channel wasn't created
Back-End:
ChatController:
#RestController
public class ChatController {
#Autowired
private PrivateChatService privateChatService;
private final static Logger logger = LogManager.getLogger(ChatController.class.getName());
#RequestMapping(value = "/chat/messages/{item_id}/chat_with/{buyer_login}", method = RequestMethod.GET, produces = "application/json")
public ResponseEntity<String> getExistingChatMessages(#PathVariable("item_id") String itemId, #PathVariable("buyer_login") String buyerLogin) {
List<ChatMessage> messages = privateChatService.getExistingChatMessages(itemId, buyerLogin);
logger.info("Here get messages");
return JSONResponseHelper.createResponse(messages, HttpStatus.OK);
}
#MessageMapping("/chat/{item_id}/send")
#SendTo("/topic/chat/{item_id}/chat_with/{buyer_login}")
public ChatMessage send(#Payload ChatMessage message,
#DestinationVariable("item_id") String item_id) throws Exception {
// logger.info(principal.getName());
logger.info(message.toString());
logger.info(item_id);
privateChatService.submitMessage(message);
return message;
}
}
WebSocketConfig:
#Configuration
#EnableWebSocketMessageBroker
#Order(Ordered.HIGHEST_PRECEDENCE + 99)
public class WebSocketConfig extends AbstractWebSocketMessageBrokerConfigurer {
private final static Logger logger = LogManager.getLogger(WebSocketConfig.class.getName());
#Autowired
private JwtTokenProvider jwtTokenProvider;
#Autowired
private PrivateChatService privateChatService;
private static final String MESSAGE_PREFIX = "/topic";
private static final String END_POINT = "/chat";
private static final String APPLICATION_DESTINATION_PREFIX = "/live";
#Override
public void registerStompEndpoints(StompEndpointRegistry registry) {
if (registry != null) {
registry.addEndpoint(END_POINT).setAllowedOrigins("*").withSockJS();
}
}
#Override
public void configureMessageBroker(MessageBrokerRegistry registry) {
if (registry != null) {
registry.enableSimpleBroker(MESSAGE_PREFIX);
registry.setApplicationDestinationPrefixes(APPLICATION_DESTINATION_PREFIX);
}
}
#Override
public void configureClientInboundChannel(ChannelRegistration registration) {
registration.setInterceptors(new ChannelInterceptorAdapter() {
#Override
public Message<?> preSend(Message<?> message, MessageChannel channel) {
StompHeaderAccessor accessor = MessageHeaderAccessor.getAccessor(message, StompHeaderAccessor.class);
if (StompCommand.CONNECT.equals(accessor.getCommand())) {
String authToken = accessor.getFirstNativeHeader("Authentication");
String jwt = JwtUtils.resolveToken(authToken);
if (jwtTokenProvider.validateToken(jwt)) {
Authentication authentication = jwtTokenProvider.getAuthentication(jwt);
accessor.setUser(authentication);
String itemId = accessor.getFirstNativeHeader("item_id");
accessor.setDestination("/topic" + privateChatService.getChannelId(itemId, authentication.getName()));
logger.info(accessor.getDestination()); //ex: /topic/chat/3434/chat_with/user3797474342423
}
}
return message;
}
});
}
}
WebSocketSecurityConfig
#Configuration
public class WebSocketSecurityConfig extends AbstractSecurityWebSocketMessageBrokerConfigurer {
#Override
protected boolean sameOriginDisabled() {
return true;
}
}
Mobile client, ng2-stomp-service:
private _initWebsock(auth_token:string, item_id: number) {
let headers: Object = {
Authentication: `Bearer ${auth_token}`,
item_id: item_id
};
this.stomp.configure({
host :this.websocketApi + 'chat',
headers: headers,
queue:{'init':false}
});
console.log("Connecting stomp socket...");
//start connection
this.stomp.startConnect().then(() => {
this.stomp.done('init');
console.log('connected');
//subscribe
this.subscription = this.stomp.subscribe(`/chat/${item_id}/`, this.socketListener);
});
}
public socketListener = (data) => {
console.log(data)
};
send(msg: ChatMessage, item_id: number){
//send data
console.log(msg);
this.stomp.send(`/live/chat/${item_id}/send`, {}, JSON.stringify(msg));
}
Problem 1(probably):
In the browser console it shows that a client subscribes to /chat/item_id instead of /topic/chat/3434/chat_with/user3797474342423 => seems like configureClientInboundChannel doesn't work?
Problem 2:
When trying to execute this.stomp.send(/live/chat/${item_id}/send, {}, JSON.stringify(msg));, getting
o.s.m.s.b.DefaultSubscriptionRegistry : No destination in GenericMessage [payload=byte[2], headers={simpMessageType=MESSAGE.... Error.
https://docs.spring.io/spring/docs/current/spring-framework-reference/web.html#websocket-stomp-authentication
and
https://stackoverflow.com/a/33962402/8336511
This is how I solved this problem:
When user authenticates with Spring Security, WebSocket module creates
unique channel for that user based on his Principal. Example
"/user/queue/position-updates" is translated to
"/queue/position-updates-user123"
So on the client side all I had to do, was subscribe to
/user/queue/requests
And on the server side, send messages to
/user/{username}/queue/requests with
convertAndSendToUser(request.getFromUser(), "/queue/requests",
request) and Spring handles the rest.
I'm trying to add custom headers to the STOMP 'CREATED' message, which is received by client at the first connection. Here is the function which connects to the WebSocket using STOMP JavaScript:
function connect() {
socket = new SockJS('/chat');
stompClient = Stomp.over(socket);
stompClient.connect('', '', function(frame) {
whoami = frame.headers['user-name'];
console.log(frame);
stompClient.subscribe('/user/queue/messages', function(message) {
console.log("MESSAGE RECEIVED:");
console.log(message);
showMessage(JSON.parse(message.body));
});
stompClient.subscribe('/topic/active', function(activeMembers) {
showActive(activeMembers);
});
});
}
This function prints the following to the browser's console:
body: ""
command: "CONNECTED"
headers: Object
heart-beat: "0,0"
user-name: "someuser"
version: "1.1"
And i want to add custom header so output must look like:
body: ""
command: "CONNECTED"
headers: Object
heart-beat: "0,0"
user-name: "someuser"
version: "1.1"
custom-header: "foo"
I have the following WebSocket configuration in my Spring Boot app.
WebSocketConfig.java
#Configuration
#EnableWebSocketMessageBroker
public class WebSocketConfig implements WebSocketMessageBrokerConfigurer {
#Override
public void configureMessageBroker(MessageBrokerRegistry config) {
config.enableSimpleBroker("/queue", "/topic");
config.setApplicationDestinationPrefixes("/app");
}
#Override
public void registerStompEndpoints(StompEndpointRegistry registry) {
registry.addEndpoint("/chat", "/activeUsers")
.withSockJS()
.setInterceptors(customHttpSessionHandshakeInterceptor());
}
...
#Bean
public CustomHttpSessionHandshakeInterceptor
customHttpSessionHandshakeInterceptor() {
return new CustomHttpSessionHandshakeInterceptor();
}
}
I have tried to register the 'HandshakeInterceptor' to set custom header, but it didn't work. Here is 'CustomHttpSessionHandshakeInterceptor':
CustomHttpSessionHandshakeInterceptor.java
public class CustomHttpSessionHandshakeInterceptor implements
HandshakeInterceptor {
#Override
public boolean beforeHandshake(ServerHttpRequest request,
ServerHttpResponse response,
WebSocketHandler wsHandler,
Map<String, Object> attributes) throws Exception {
if (request instanceof ServletServerHttpRequest) {
ServletServerHttpRequest servletRequest =
(ServletServerHttpRequest) request;
attributes.put("custom-header", "foo");
}
return true;
}
public void afterHandshake(ServerHttpRequest request,
ServerHttpResponse response,
WebSocketHandler wsHandler,
Exception ex) { }
}
I have found this code snippet at https://dzone.com/articles/spring-boot-based-websocket
Can someone explain me why this approach does not work? Is there another way to set custom headers to the STOMP 'CREATED' message at server side in Spring Boot application?
Thanks!
Maybe it's too late, but better late than never ...
Server messages (e.g. CONNECTED) are immutable, means that they cannot be modified.
What I would do is register a client outbound interceptor and trap the connected message by overriding the preSend(...) method and build a new message with my custom headers.
#Override
public Message<?> preSend(Message<?> message, MessageChannel channel)
{
LOGGER.info("Outbound channel pre send ...");
final StompHeaderAccessor headerAccessor = StompHeaderAccessor.wrap(message);
final StompCommand command = headerAccessor.getCommand();
if (!isNull(command)) {
switch (command) {
case CONNECTED:
final StompHeaderAccessor accessor = StompHeaderAccessor.create(headerAccessor.getCommand());
accessor.setSessionId(headerAccessor.getSessionId());
#SuppressWarnings("unchecked")
final MultiValueMap<String, String> nativeHeaders = (MultiValueMap<String, String>) headerAccessor.getHeader(StompHeaderAccessor.NATIVE_HEADERS);
accessor.addNativeHeaders(nativeHeaders);
// add custom headers
accessor.addNativeHeader("CUSTOM01", "CUSTOM01");
final Message<?> newMessage = MessageBuilder.createMessage(new byte[0], accessor.getMessageHeaders());
return newMessage;
default:
break;
}
}
return message;
}
#UPDATE:::
The interface needed is called ChannelInterceptor and to register your own implementation you need to add #Configuration annotated class
#Configuration
public class CustomMessageBrokerConfig extends WebSocketMessageBrokerConfigurationSupport
implements WebSocketMessageBrokerConfigurer{}
and override a method configureClientOutboundChannel as below
#Override
public void configureClientOutboundChannel(ChannelRegistration registration) {
log.info("Configure client outbound channel started ...");
registration.interceptors(new CustomOutboundChannelInterceptor());
log.info("Configure client outbound channel completed ...");
}
Did you try it like this way? MessageHeaderAccessor has a setHeader method too.
https://docs.spring.io/spring/docs/current/spring-framework-reference/html/websocket.html#websocket-stomp-authentication-token-based
I wrote a web socket server and a client with spring. The codes is following. The codes sending message to server work, but the sesssion.subscribe method cannot receive message from the server. I search for many documents and check my codes. I don't why it cannot work.
Here is my client codes:
public class Test {
public static void main(String[] args) {
Thread thread = new Thread(new WebsocketThread());
thread.start();
Thread.sleep(5000);
}
}
class MyStompSessionHandler extends StompSessionHandlerAdapter {
#Override
public void afterConnected(StompSession session, StompHeaders connectedHeaders) {
session.send("/app/messages", "{'payload3':2222}".getBytes());
session.subscribe("/user/queue/position-updates", new StompFrameHandler() {
#Override
public Type getPayloadType(StompHeaders headers) {
return String.class;
}
#Override
public void handleFrame(StompHeaders headers, Object payload) {
System.out.println("test:" + payload);
}
});
}
}
class WebsocketThread implements Runnable{
#Override
public void run() {
List<Transport> transports = new ArrayList<>(1);
transports.add(new WebSocketTransport( new StandardWebSocketClient()) );
WebSocketClient webSocketClient = new SockJsClient(transports);
WebSocketStompClient stompClient = new WebSocketStompClient(webSocketClient);
String url = "ws://127.0.0.1:8860/orders";
StompSessionHandler sessionHandler = new MyStompSessionHandler();
ListenableFuture<StompSession> future = stompClient.connect(url, sessionHandler);
}
}
Here is my server codes:
#Controller
public class TestController {
#Autowired
private SimpMessagingTemplate simpMessagingTemplate;
#MessageMapping("/messages")
public void sendUserMsg(String messages) throws IOException {
System.out.println("webSocket:" + messages);
simpMessagingTemplate.convertAndSend("/queue/position-updates", "This is return message");
}
}
It is Exception:
org.springframework.messaging.converter.MessageConversionException: No suitable converter, payloadType=class java.lang.String, handlerType=class com.example.hello.MyStompSessionHandler
at org.springframework.messaging.simp.stomp.DefaultStompSession.invokeHandler(DefaultStompSession.java:419)
at org.springframework.messaging.simp.stomp.DefaultStompSession.handleMessage(DefaultStompSession.java:373)
at org.springframework.web.socket.messaging.WebSocketStompClient$WebSocketTcpConnectionHandlerAdapter.handleMessage(WebSocketStompClient.java:342)
at org.springframework.web.socket.sockjs.client.AbstractClientSockJsSession.handleMessageFrame(AbstractClientSockJsSession.java:267)
at org.springframework.web.socket.sockjs.client.AbstractClientSockJsSession.handleFrame(AbstractClientSockJsSession.java:200)
at org.springframework.web.socket.sockjs.client.WebSocketTransport$ClientSockJsWebSocketHandler.handleTextMessage(WebSocketTransport.java:162)
at org.springframework.web.socket.handler.AbstractWebSocketHandler.handleMessage(AbstractWebSocketHandler.java:43)
at org.springframework.web.socket.adapter.standard.StandardWebSocketHandlerAdapter.handleTextMessage(StandardWebSocketHandlerAdapter.java:110)
at org.springframework.web.socket.adapter.standard.StandardWebSocketHandlerAdapter.access$000(StandardWebSocketHandlerAdapter.java:42)
at org.springframework.web.socket.adapter.standard.StandardWebSocketHandlerAdapter$3.onMessage(StandardWebSocketHandlerAdapter.java:81)
at org.springframework.web.socket.adapter.standard.StandardWebSocketHandlerAdapter$3.onMessage(StandardWebSocketHandlerAdapter.java:78)
at org.apache.tomcat.websocket.WsFrameBase.sendMessageText(WsFrameBase.java:399)
at org.apache.tomcat.websocket.WsFrameBase.processDataText(WsFrameBase.java:500)
at org.apache.tomcat.websocket.WsFrameBase.processData(WsFrameBase.java:295)
at org.apache.tomcat.websocket.WsFrameBase.processInputBuffer(WsFrameBase.java:131)
at org.apache.tomcat.websocket.WsFrameClient.processSocketRead(WsFrameClient.java:73)
at org.apache.tomcat.websocket.WsFrameClient.access$300(WsFrameClient.java:31)
at org.apache.tomcat.websocket.WsFrameClient$WsFrameClientCompletionHandler.completed(WsFrameClient.java:131)
at org.apache.tomcat.websocket.WsFrameClient$WsFrameClientCompletionHandler.completed(WsFrameClient.java:114)
at sun.nio.ch.Invoker.invokeUnchecked(Invoker.java:126)
at sun.nio.ch.Invoker$2.run(Invoker.java:218)
at sun.nio.ch.AsynchronousChannelGroupImpl$1.run(AsynchronousChannelGroupImpl.java:112)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
at java.lang.Thread.run(Thread.java:745)
add a StringMessageConverter to Client, it works.
WebSocketStompClient stompClient = new WebSocketStompClient(webSocketClient);
stompClient.setMessageConverter(new StringMessageConverter());
But how to customize our own MessageConverter? Is there any article?
In my case, the server was sending both json and raw string messages on different channels.
To be able to handle both cases, I went through the MessageConverter implementations and found CompositeMessageConverter, which allows multiple converters to be setup on the client.
Code:
List<MessageConverter> converters = new ArrayList<MessageConverter>();
converters.add(new MappingJackson2MessageConverter()); // used to handle json messages
converters.add(new StringMessageConverter()); // used to handle raw strings
client.setMessageConverter(new CompositeMessageConverter(converters));
The StompFrameHandler will then decide, based on what getPayloadType() returns, which converter to use.
add a SimpleMessageConverter to Client, it works.
stompClient.setMessageConverter(new SimpleMessageConverter());
It seems like you don't have configured any org.springframework.messaging.converter.MessageConverter in web socket configuration.
If you have jackson jar on your class path then it will be automatically picked up for json conversion. For other convertors , you need to configure it in WebSocket Config file .
#Configuration
#EnableWebSocketMessageBroker
#ComponentScan(SpringScanPackageNames)
public class WebSocketConfig extends AbstractWebSocketMessageBrokerConfigurer {
#Override
public boolean configureMessageConverters(List<MessageConverter> arg0) {
StringMessageConverter strConvertor = new StringMessageConverter();
arg0.add(strConvertor);
return true;
}
// Other config
I had a similar problem (though I was sending custom objects) and what worked for me was to simply set the Jackson2Message message converter as
webSocketStompClient.messageConverter = new MappingJackson2MessageConverter()
I found useful info (and examples) about this on: https://github.com/Noozen/spring-boot-websocket-client#the-java-client