RFR: 8326498: java.net.http.HttpClient connection leak using http/2

[Daniel Fuchs]

On Tue, 11 Nov 2025 12:58:04 GMT, Jaikiran Pai <jpai at openjdk.org> wrote:

> Can I please get a review for this fix which addresses a connection leak in HttpClient when dealing with HTTP/2 requests?
> 
> I have added a comment in https://bugs.openjdk.org/browse/JDK-8326498 which explains what the issue is. The fix here addresses the issue by cleaning up the `Http2Connection` closing logic and centralizing it to a connection terminator. The terminator then ensures that the right resources are closed (including the underlying SocketChannel) when the termination happens.
> 
> A new jtreg test has been introduced which reproduces the issue and verifies the fix.

src/java.net.http/share/classes/jdk/internal/net/http/Http2Connection.java line 912:

> 910:      * Closes the connection normally (with a NO_ERROR termination cause), if not already closed.
> 911:      */
> 912:     final void close() {

Maybe we should mark the Http2Connection as Closeable.

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PR Review Comment: https://git.openjdk.org/jdk/pull/28233#discussion_r2514204634