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https://issues.apache.org/jira/browse/WICKET-6692?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16907227#comment-16907227
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Martin Grigorov edited comment on WICKET-6692 at 8/14/19 12:26 PM:
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Sorry, but Wicket 6.x receives only security related fixes.
was (Author: mgrigorov):
Sorry, but Wicket 6.x received only security related fixes.
> Page deserialization on websocket close - possible performance issue
> --------------------------------------------------------------------
>
> Key: WICKET-6692
> URL: https://issues.apache.org/jira/browse/WICKET-6692
> Project: Wicket
> Issue Type: Bug
> Components: wicket-native-websocket
> Affects Versions: 6.30.0, 8.5.0
> Reporter: Daniel Stoch
> Assignee: Martin Grigorov
> Priority: Major
> Attachments: websocket-deser-onclose.zip
>
>
> We have a page with websocket connection (using WebSocketBehavior). When user
> navigates to another page, a websocket connection is closed and
> AbstractWebSocketProcessor.onClose method is called. This causes broadcasting
> a message to connected page:
> {code}
> broadcastMessage(new ClosedMessage(getApplication(), getSessionId(), key));
> {code}
> and leads to page deserialisation (from PageStore).
> I wonder how it can affect performance: almost every page navigation causes
> page deserialization (when it should occur only for back button or when some
> websocket message comes and application need to process it).
>
> Maybe this message should be send only when needed or maybe I should not care
> and current behaviour does not affect performance?
>
> I have attached a simple quick start:
> - click links to navigate between pages: “Nav 1” and “Home”,
> - after each click you can see “>> Closed message: …” on System.out (so
> closed message was sent),
> - AbstractWebSocketProcessor broadcast a ClosedMessage to a page, which
> causes its deserialization (you can debug IPageStore.getPage call).
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