RFR: 8367561: Getting some "header" property from a file:// URL causes a file descriptor leak [v3]

[Daniel Fuchs]

On Mon, 13 Oct 2025 05:17:06 GMT, Jaikiran Pai <jpai at openjdk.org> wrote:

>> This is a very subtle detail, shall we document the rationale for `Reference.reachabilityFence(conn)`?
>
> Hello Volkan, I've now added a comment in the test methods to explain why this line is present.

Technically the reachabilityFence should be in the finally clause of a try-finally to make sure it's not rearranged away by JIT - but I'm not sure how important this is for a test like this. Alternative could be to stash the reference in a static field. As long as the test methods are not run in parallel that should work too.

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PR Review Comment: https://git.openjdk.org/jdk/pull/27633#discussion_r2426003503