RFR: 8353440: Disable FTP fallback for non-local file URLs by default

[Eirik Bjørsnøs]

On Mon, 21 Apr 2025 07:05:05 GMT, Alan Bateman <alanb at openjdk.org> wrote:

> No objection to disabling this legacy feature by default but I think it will require writing a release note, and thus will document the system property

Indeed.  A provisional release note can be found here: https://bugs.openjdk.org/browse/JDK-8354658

> Right now, the proposal seems to be name the system property "sun.net.www.protocol.file.ftp-enabled" and I think we'll have to rename this to something starting with "jdk.net", and some combination of works that makes it clear that it allows file URL to make ftp connections.

Yes, in fact I did not put much thought into the name, since I anticipated reviewers to have input on this choice anyhow. 

> I can suggest some property names if you wish.

That would be great! I'm not sure what would be a good pattern/precedence to follow here. Anything you can propose would most likely be an improvement over the current "working title" :-)

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PR Comment: https://git.openjdk.org/jdk/pull/24657#issuecomment-2817816865