Session timeout is immediately followed with a page reload, starting a new session-CodePudding

When the VaadinSession timeout happens, the page automatically reloads starting a new VaadinSession.

Vaadin 23.0.5

Below, I have included the Chrome console log as the session ends and the reload happens. There is nothing indicating why this is going on in the java logs. This appears (to me) to be initiated in the browser, possibly by the service worker?

Suggestions for further diagnostics, or just an outright solution (I can dream) would be greatly appreciated.

Here is the Chrome console as the Session terminates...

Received push (websocket) message: for(;;);[{"syncId":4,"clientId":2,"meta":{"async":true,"sessionExpired":true},"timings":[5,0]}]

FlowClient.js?2d7e:1004 Handling message from server

FlowClient.js?2d7e:944 Handling dependencies

FlowClient.js?2d7e:193 handleUIDLMessage: 0 ms

vaadinPush.js?v=23.0.4:3323 Mon Jun 06 2022 13:41:09 GMT 1000 (Australian Eastern Standard Time) Atmosphere: beforeunload event

FlowClient.js?2d7e:193 Setting heartbeat interval to -1sec.

FlowClient.js?2d7e:835 Disabling heartbeat

FlowClient.js?2d7e:936 Closing push connection

vaadinPush.js?v=23.0.4:3323 Mon Jun 06 2022 13:41:09 GMT 1000 (Australian Eastern Standard Time) Atmosphere: Closing (AtmosphereRequest._close() called)

vaadinPush.js?v=23.0.4:3323 Mon Jun 06 2022 13:41:09 GMT 1000 (Australian Eastern Standard Time) Atmosphere: Firing onClose (unsubscribe case)

FlowClient.js?2d7e:1006 Push connection closed

vaadinPush.js?v=23.0.4:3323 Mon Jun 06 2022 13:41:09 GMT 1000 (Australian Eastern Standard Time) Atmosphere: Request already closed, not firing onClose (unsubscribe case)

vaadinPush.js?v=23.0.4:3323 Mon Jun 06 2022 13:41:09 GMT 1000 (Australian Eastern Standard Time) Atmosphere: invoking .close() on WebSocket object

FlowClient.js?2d7e:193 Processing time was 5ms

vaadinPush.js?v=23.0.4:3323 Mon Jun 06 2022 13:41:09 GMT 1000 (Australian Eastern Standard Time) Atmosphere: Request already closed, not firing onClose (unsubscribe case)

logger.js?aa4d:46 workbox No route found for: /?v-r=push&v-uiId=0&v-pushId=09139213-af19-48d7-8a55-278da41b839f&X-Atmosphere-Transport=close&X-Atmosphere-tracking-id=3c2a0c76-86d7-4952-a1c4-80786dd19bd0

vaadinPush.js?v=23.0.4:3323 Mon Jun 06 2022 13:41:09 GMT 1000 (Australian Eastern Standard Time) Atmosphere: websocket.onclose

vaadinPush.js?v=23.0.4:3323 Websocket closed, reason: Normal closure; the connection successfully completed whatever purpose for which it was created. - wasClean: true

log @ vaadinPush.js?v=23.0.4:3323

warn @ vaadinPush.js?v=23.0.4:3329

_websocket.onclose @ vaadinPush.js?v=23.0.4:1537

vaadinPush.js?v=23.0.4:3323 Mon Jun 06 2022 13:41:09 GMT 1000 (Australian Eastern Standard Time) Atmosphere: Request already closed, not firing onClose (closed case)

vaadinPush.js?v=23.0.4:3323 Websocket closed normally

Which is immediately followed with the page reloading...

logger.js?aa4d:46 workbox The navigation route / is being used.

logger.js?aa4d:46 workbox Router is responding to: /

logger.js?aa4d:46 workbox Network request for '/' returned a response with status '200'.

logger.js?aa4d:46 workbox Using NetworkOnly to respond to '/'

Mon Jun 06 2022 13:41:11 GMT 1000 (Australian Eastern Standard Time) Atmosphere: unload event

logger.js?aa4d:46 workbox No route found for: https://api.breadbutter.io/apps/xxxxxxxxxxxxxxxx/prerelease/page_engagement

logger.js?aa4d:46 workbox Router is responding to: /VAADIN/build/vaadin-bundle-52a045587b10cc017547.cache.js

logger.js?aa4d:46 workbox Found a cached response in 'workbox-precache-v2-https://mylocalhost/'.

logger.js?aa4d:46 workbox Precaching did not find a match for /?v-r=init&location=

logger.js?aa4d:46 workbox No route found for: /?v-r=init&location=

logger.js?aa4d:46

CodePudding user response：

Yes, this is intended behavior.

You need to setup servlet initialized listener and there define customized system messages, there sessionExpiredURL needs to be not null (null is the default value, and if it is null, page will reload upon session expired)

       getService()
                .setSystemMessagesProvider(new SystemMessagesProvider() {
                    @Override
                    public SystemMessages getSystemMessages(
                            SystemMessagesInfo systemMessagesInfo) {
                        CustomizedSystemMessages messages = new CustomizedSystemMessages();
                        messages.setSessionExpiredNotificationEnabled(
                                false); // or true
                        messages.setSessionExpiredURL( USE NON-NULL VALUE HERE );
                        return messages;
                    }
                });