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Regression to #15612 - does not account for padding in decompressedBytes causing HTTP/2 to fail. #16252

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#16264
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Regression to #15612 - does not account for padding in decompressedBytes causing HTTP/2 to fail.#16252
#16264
@zekronium

Description

@zekronium
zekronium
opened on Feb 10, 2026

After PR #15612 the decompressor does not increment decompressor.incrementDecompressedBytes(padding); which causes a stream exception when bytes are consumed:

netty/codec-http2/src/main/java/io/netty/handler/codec/http2/DelegatingDecompressorFrameListener.java

Lines 368 to 369 in d22b216

connection.local().flowController().consumeBytes(stream,
listener.onDataRead(targetCtx, stream.id(), buf, padding, false)); 

io.netty.handler.codec.http2.Http2Exception$StreamException: Attempting to return too many bytes for stream 1. decompressed: 0 decompressedBytes: 107

Adding padding to any of the tests will start to throw exceptions.

Related commits:
9d804c5
34894ac

Related Vert.x Issue:
eclipse-vertx/vert.x#5960

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