[Bug] Make composite input stream handling safe when stream close races with an in-progress read

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Apache Dubbo Component

Java SDK (apache/dubbo)

Dubbo Version

Dubbo Java 3.3.7-SNAPSHOT, OpenJDK 25, WINDOWS

Steps to reproduce this issue

Fix composite input stream handling so that closing a stream while a concurrent read operation is actively consuming data does not cause unexpected stream closed exceptions or state corruption. When a client connection terminates abruptly during HTTP/2 streaming, the transport layer triggers a stream closure on the I/O event thread, which can execute simultaneously while an application worker thread is reading from the composite input stream for that same request. The composite stream handling must safely synchronize or manage concurrent closure during active reads so that in-flight read operations complete or terminate cleanly without raising unhandled concurrent access errors.

What you expected to happen

The composite stream handling must safely synchronize or manage concurrent closure during active reads so that in-flight read operations complete or terminate cleanly without raising unhandled concurrent access errors.

Anything else

No response

Do you have a (mini) reproduction demo?

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Are you willing to submit a pull request to fix on your own?

• Yes I am willing to submit a pull request on my own!

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