The HTTP response from the server [200] did not permit the HTTP upgrade to WebSocket

问题

I have my websocket client developed in STOMP Java client (Spring project) and server implemented in Spring boot.

When the client/server handshake happens, I am getting a connection upgrade issue.

Java Client Code

List<Transport> transports = new ArrayList<>(1);
transports.add(new WebSocketTransport(new StandardWebSocketClient()));      

SockJsClient sockjsClient = new SockJsClient(transports);   

WebSocketStompClient stompClient = new WebSocketStompClient(sockjsClient);

stompClient.setMessageConverter(new MappingJackson2MessageConverter());

stompClient.setTaskScheduler(new ConcurrentTaskScheduler());

StompSessionHandler sessionHandler = new SessionHandler();
stompClient.connect("ws://localhost:9090/health", sessionHandler);

Server side

@Override
public void registerStompEndpoints(StompEndpointRegistry stompEndpointRegistry) {       
    stompEndpointRegistry.addEndpoint("/health")
            .setAllowedOrigins("*")
            .withSockJS();
}
@Override
public void configureMessageBroker(MessageBrokerRegistry registry) {
    registry.enableSimpleBroker("/topic");
    registry.setApplicationDestinationPrefixes("/app");
}

Exception generated at client side while connection to server

16:18:50.955/3771 [SimpleAsyncTaskExecutor-1] ERROR o.s.w.s.s.c.DefaultTransportRequest - No more fallback transports after TransportRequest[url=ws://localhost:9090/health/29/344d627baac949f5bab5506f05f1a7eb/websocket]
javax.websocket.DeploymentException: The HTTP response from the server [200] did not permit the HTTP upgrade to WebSocket
               at org.apache.tomcat.websocket.WsWebSocketContainer.connectToServerRecursive(WsWebSocketContainer.java:434)
               at org.apache.tomcat.websocket.WsWebSocketContainer.connectToServerRecursive(WsWebSocketContainer.java:392)
               at org.apache.tomcat.websocket.WsWebSocketContainer.connectToServer(WsWebSocketContainer.java:194)
               at org.springframework.web.socket.client.standard.StandardWebSocketClient.lambda$doHandshakeInternal$0(StandardWebSocketClient.java:150)
               at java.util.concurrent.FutureTask.run(FutureTask.java:266)
               at java.lang.Thread.run(Thread.java:745)

In the tomcat localhost_access_log I see the below request info

127.0.0.1 - - [01/Nov/2018:22:09:41 +0530] "GET /health/info HTTP/1.1" 302 - 0
127.0.0.1 - - [01/Nov/2018:22:09:41 +0530] "GET /login.jsp HTTP/1.1" 200 7649 16
127.0.0.1 - - [01/Nov/2018:22:09:41 +0530] "GET /health/191/6828a1fdefee40cf8dc74e825d8d2b0c/websocket HTTP/1.1" 302 - 0
127.0.0.1 - - [01/Nov/2018:22:09:41 +0530] "GET /login.jsp HTTP/1.1" 200 7649 0

I didn't find any info on how to fix this issue and what is causing it.

Please help me resolve this issue.

来源：https://stackoverflow.com/questions/53105701/the-http-response-from-the-server-200-did-not-permit-the-http-upgrade-to-webso

标签

java

Spring

websocket

stomp

sockjs