Spring Websocket with SockJs switch from XHR streaming to Websocket

Question

I am using Spring Websocket with SockJs (v1.1.1) over STOMP on client. I create the client with the code below.

SockJS = require('sockjs-client')
Stomp = require('webstomp-client')
stompClient = Stomp.over(new SockJS(url))

It's works fine. But it uses xhr_streaming as transport by default, that is not desirable for me. I want to switch it to websocket tranport.

stompClient = Stomp.over(new SockJS(url, null, {transports:'websocket'}))

But this approach does not work for me. It falls with event:

code: 2000
reason: "All transports failed"

My Spring Websocket configuration is very simple:

@Configuration
@EnableWebSocketMessageBroker
public class WebSocketConfig extends AbstractSessionWebSocketMessageBrokerConfigurer<ExpiringSession> {

    @Override
    public void configureStompEndpoints(StompEndpointRegistry registry) {
        registry.addEndpoint("/myEndpoint").setAllowedOrigins("*")
            .withSockJS();
    }

    @Override
    public void configureMessageBroker(MessageBrokerRegistry registry) {
        registry.enableSimpleBroker("/queue/", "/topic/");
        registry.setApplicationDestinationPrefixes("/app");
    }

}

The main problem I face with xhr_streaming is that every stream request updates last access time for user session (I use Spring Session as well). But it's not a desirable behavior for my application. So how I can fix it? And will websocket transport help? Thanks in advance.

Answer 1

So, I've got the reason. I am using a webpack dev server with proxy option. By default it does NOT proxy ws protocol requests (it losts headers). You need toa add ws: true to your config and everything will work fine.

proxy: {
        '/api/*': {
            target: 'http://localhost:8080',
            pathRewrite: {'^/api' : ''},
            ws: true 
        }
    }