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https://issues.apache.org/jira/browse/WICKET-5153?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Emond Papegaaij resolved WICKET-5153.
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Resolution: Duplicate
Fix Version/s: 6.7.0
> Wicket-atmosphere pushes empty messages
> ---------------------------------------
>
> Key: WICKET-5153
> URL: https://issues.apache.org/jira/browse/WICKET-5153
> Project: Wicket
> Issue Type: Bug
> Components: wicket-atmosphere
> Affects Versions: 6.6.0
> Reporter: Andrei Badea
> Assignee: Emond Papegaaij
> Fix For: 6.7.0
>
>
> When filters filter out all subscriptions for a page, the logic around the
> ajaxRequestScheduled flag in AtmosphereRequestHandler prevents rendering the
> AjaxRequestHandler, which results in an emtpy response. This is pushed to the
> client and passed to the Wicket Ajax framework, which fails to parse it,
> because it expects it to be an XML document with ajax-response root element.
> This appears in the Wicket Ajax debug window:
> ERROR: Wicket.Ajax.Call.failure: Error while parsing response: Could not find
> root <ajax-response> element
> Note that because of
> https://github.com/Atmosphere/atmosphere/issues/1042
> Atmosphere does not pass the first empty message to callbacks, so the error
> above only happens when the second empty message is pushed.
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