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Vaadin Forum3. Vaadin 6, 7, 8

Page refresh pushes session out of sync

Pavel Panchenko
5 years ago Jan 31, 2017 11:48am

I have some background thread, which works long time and changes ui. If user refreshes the page ui goes out of sync. I have an example app https://github.com/asdnf/vaadin-push-issue-test.git . 
Is there a common approach to handle these errors?

Olli Tietäväinen
5 years ago Jan 31, 2017 12:03pm

Hi,

have you tried using the @PreserveOnRefresh annotation in your UI?

-Olli

+1
Pavel Panchenko
5 years ago Feb 01, 2017 5:15am

Seems like it resolves my issue. Thank you.

Olli Tietäväinen
5 years ago Feb 01, 2017 6:07am

You're welcome! Note that introducing @PreserveOnRefresh has some potential downsides, like if your app ends up in an invalid state, you can't just reload the page to get out of it.

-Olli