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https://issues.apache.org/jira/browse/WICKET-4954?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13546855#comment-13546855
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Andrea Del Bene commented on WICKET-4954:
-----------------------------------------
IMHO it's not worthwhile to implement a new channel type. I'd rather implement
a solution for HTML5 which allows to know the file size before starting the
upload.
I've attached the patch for the progress bar.
> Issue with file upload with progress bar via AJAX and Firefox
> -------------------------------------------------------------
>
> Key: WICKET-4954
> URL: https://issues.apache.org/jira/browse/WICKET-4954
> Project: Wicket
> Issue Type: Bug
> Environment: Firefox 17.0.1
> Reporter: Andrea Del Bene
>
> Firefox has a strange problem when used with a form that is set to
> multipart/form-data and submitted via AJAX. It seems like it's still waiting
> for the response to finish even after the AJAX response has terminated.
> You can see this issue in the example here:
> http://www.wicket-library.com/wicket-examples-6.0.x/ajax/upload?0.
> The upload works fine but after it has completed Firefox displays the "Stop"
> button instad of "Reload". Moreover, if you try to upload a file bigger then
> the limit (1 M), the upload bar enters into a loop where it continues to read
> the upload status.
> Everything works fine with Chrome.
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