RFR: 8330940: Impossible to create a socket backlog greater than 200 on Windows 8+ [v2]

[Jaikiran Pai]

On Tue, 12 Aug 2025 01:13:57 GMT, jwilliams990 <duke at openjdk.org> wrote:

>> Jaikiran Pai has updated the pull request incrementally with four additional commits since the last revision:
>> 
>>  - include a test for AsynchronousServerSocketChannel
>>  - System.err instead of System.out
>>  - trim down code comment
>>  -  > 200 instead of >= 200
>
> Hi, Which version of OpenJDK is this change available in? I am running into a situation where Java on Windows drops TCP/HTTP connections, but i don't have this issue on Linux (I have tested with JDK 21.0.8+9).

Hello @jwilliams990 

> Hi, Which version of OpenJDK is this change available in?

This change is currently in the unreleased Java 26 version. It's only available in 26 early access builds https://jdk.java.net/26/ or one has to manually build this JDK repo to use this feature. 

> I am running into a situation where Java on Windows drops TCP/HTTP connections, but i don't have this issue on Linux (I have tested with JDK 21.0.8+9).

Linux too has a limit on the number of backlog connections. I don't know the details of the issue you are running into but it could be unrelated to trying to use a backlog value greater than 200 on Windows, when creating a `ServerSocket`.

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PR Comment: https://git.openjdk.org/jdk/pull/25819#issuecomment-3177598778