Check that the heartbeat feature still works

orbeon / orbeon-forms

Orbeon Forms is an open source web forms solution. It includes an XForms engine, the Form Builder web-based form editor, and the Form Runner runtime.

http://www.orbeon.com/

GNU Lesser General Public License v2.1

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Check that the heartbeat feature still works #6364

Open ebruchez opened 3 weeks ago

ebruchez commented 3 weeks ago

Changing the session time to 5 minutes, I do see activity, heartbeat events sent, and the session extended.

The reason I opened this issue is that I have regularly come back to a page, and the session had expired. I wonder if it is because Chrome paused the tab?

ebruchez commented 3 weeks ago

If this is indeed due to the browser killing/pausing tabs more often, we might need some new creative solutions to help. For example:

when autosave is enabled, make sure there is a quick path to resuming form entry
when autosave is disabled, could the form state be occasionally serialized/encrytped and saved on the client?

ebruchez commented 2 weeks ago

Checking the timeline of a failed case locally, with a 5 minute session in web.xml:

21:11:40 GMT
- xxforms-blur
- seq 12
21:17:11: heartbeat
21:20:34: heartbeat
21:25:47: heartbeat
21:31:11: heartbeat
21:35:11: heartbeat
21:40:11: heartbeat
21:44:11: heartbeat
21:48:11: heartbeat
21:51:31: heartbeat
21:51:33
- xxforms-repeat-activate
- seq 13
- 440!
- server: "XFormsServer - server - session not found while processing client events"

ebruchez commented 2 weeks ago

So it seems that the client dispatches the events about every 5 minutes (but there is variation, not sure why). The failure is after about 40 minutes in this case.

Possibilities:

the server session is at 5 minutes but somehow is not extended by the incoming requests
the server session is not at 5 minutes and is not extended by the incoming requests
something else!