RFR: 8366577: Deprecate java.net.Socket::setPerformancePreferences [v3]

Wed Nov 5 11:48:16 UTC 2025

On Tue, 4 Nov 2025 20:04:27 GMT, Volkan Yazici <vyazici at openjdk.org> wrote:

>> `java.net.Socket::setPerformancePreferences` was introduced in Java 1.5 with the intention of providing a declarative API for configuring the performance-wise characteristics of the underlying socket. It has always been a no-op and a corpus search does not reveal any significant usages of it. Recently merged [JDK-8366575] removes the SDP (Sockets Direct Protocol) support, and this further undermines the value of `setPerformancePreferences`. This PR deprecates `setPerformancePreferences` and friends _for removal_.
>> 
>> [JDK-8366575]: https://bugs.openjdk.org/browse/JDK-8366575
>
> Volkan Yazici has updated the pull request incrementally with one additional commit since the last revision:
> 
>   Shorten `@deprecated` message

Looks good to me.

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Marked as reviewed by dfuchs (Reviewer).

PR Review: https://git.openjdk.org/jdk/pull/28129#pullrequestreview-3421476561