RFR: 8376479: Http3 test server thread deadlock in ThrowingPublishersInRequest

[Daniel Fuchs]

On Tue, 27 Jan 2026 13:54:07 GMT, Daniel Jeliński <djelinski at openjdk.org> wrote:

> This fixes a deadlock between the thread that reads from the RequestBodyInputStream and the thread that tries to close it in response to a stream reset. See the linked JBS ticket for details.
> 
> Tier1 and tier2 tests continue to pass. I verified that with this change there are no busy threads at the end of the test.

test/jdk/java/net/httpclient/lib/jdk/httpclient/test/lib/http3/Http3ServerStreamImpl.java line 329:

> 327:             if (closed) {
> 328:                 throw new IOException("Stream is closed");
> 329:             }

No sure we want that. If there is some unread data we want to read it first.

test/jdk/java/net/httpclient/lib/jdk/httpclient/test/lib/http3/Http3ServerStreamImpl.java line 329:

> 327:             if (closed) {
> 328:                 throw new IOException("Stream is closed");
> 329:             }

No sure we want that. If there is some unread data we want to read it first.

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PR Review Comment: https://git.openjdk.org/jdk/pull/29448#discussion_r2732601433
PR Review Comment: https://git.openjdk.org/jdk/pull/29448#discussion_r2732606107