AJAX response processing hangs when header contains link with non-standard rel attribute

[whowrotethiscode]

Hello,

When a Panel contains the following code and is rendered via AJAX
then the AJAX response processing in the client browser will hang indefinitely:

    @Override
    public void renderHead(IHeaderResponse response) {
        super.renderHead(response);

        response.render(StringHeaderItem.forString(
                "<link rel=\"stylesheet/less\" type=\"text/css\" href=\"demo.less\" media=\"all\"/>"));
    }

It seems the non-standard rel="stylesheet/less"
causes wicket-ajax-jquery.js to wait for an onload event which never happens.

The above code worked OK in Wicket version 8
but it now hangs after upgrading to Wicket version 10.

Please see this minimal reproducible example: ajax-hang-demo.zip

Thanks to the Wicket team.

Environment

• Hangs in Wicket version 10.9.0
• Worked OK in Wicket 8.18.0
• Reproducible in all modern browsers

[reiern70]

Could you please create a Jira ISSUE for this?

[martin-g]

Actually I think it would better to disable JIRA and use Github Issues from now on.
It has been voted (twice, I think) to start using GH Issues. @mattrpav enabled issues and discussions few weeks ago.

[reiern70]

Actually I think it would better to disable JIRA and use Github Issues from now on. It has been voted (twice, I think) to start using GH Issues. @mattrpav enabled issues and discussions few weeks ago.

The only think I like from JIRA is the WICKET-XXXX that we put in commit message.

[mattrpav]

@reiern70 I agree we should have a commit reference back to issue. iirc Apache INFRA can migrate open JIRA issues to GitHub (Wicket does not have many open).

Going forward, if we use the GH format it will auto-link to the issue when browsed through GH online.

Example:
[#1487] AJAX response processing hangs.. (this issue)

[martin-g]

You can use "Fixes #1487" now :-)

I quite like the Github release/changelogs, e.g. https://github.com/apache/avro-rs/releases