On Tue, 12 Aug 2025 04:24:41 GMT, Jaikiran Pai <j...@openjdk.org> wrote:
>> 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`. > >> Hi @jaikiran, Thanks for your response. Any chance this could be included in >> Java 21 LTS in the future? > > Backports to OpenJDK are managed by a separate "jdk-updates" project > https://openjdk.org/projects/jdk-updates/. Members of that project decide > which changes should be backported (and when). > > For this specific change, Java 26 release isn't scheduled for this year. Once > it is released and after that version sees usage in real world applications, > only then enhancements like these are usually considered for backports. So > it's too early to say if/when this change will be backported. > > In the meantime, what would be good is if you suspect that the backlog limit > is indeed causing this issue on your setup, you could try to use the 26 early > access build which is available here https://jdk.java.net/26/ and see if that > helps you get past this issue. Are you creating a ServerSocket (or some other > construct?) with some explicit value for backlog that is greater than 200? Hi @jaikiran, I am running Apache Tomcat on Java. Tomcat has an acceptCount set to a large number (greater than 200). I believe Tomcat creates a ServerSocket with the configured acceptCount, and I suspect that it is not effective on Windows for the reasons mentioned above in this trail. ------------- PR Comment: https://git.openjdk.org/jdk/pull/25819#issuecomment-3177657942
