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Thanks for this! Yeah I overlooked that DrainingStreamReceiver pushes frames back to the end of the queue.
Will release a patch version with this fix later on
jxs
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… API (#320) This PR relies on the libp2p-yamux crate for the core functionality of our multiplexer. The main goal is to bring complete compatibility between libp2p and litep2p on the yamux layer, and remove 90% of the yamux code in favor of the upstream implementation while keeping the controller API in place. The upstream crate brings in multiple fixes for substreams while minimally impacting our dependency tree. The downside of the upstream implementation is that the controller API has been removed. Adjusting to the new API would be a massive breaking change for all transport layers. Therefore, we keep the controller API which integrates seamlessly with the upstream yamux. No other changes were present to the controller API in the upstream implementation. ### Yamux changelog The changelog includes the fixes from the upstream since the moment we have inlined the crate in litep2p: ``` # 0.13.4 - Fix sending pending frames after closing. See [PR 194](libp2p/rust-yamux#194). # 0.13.3 - Wake up readers after setting the state to RecvClosed to not miss EOF. See [PR 190](libp2p/rust-yamux#190). - Use `web-time` instead of `instant`. See [PR 191](libp2p/rust-yamux#191). # 0.13.2 - Bound `Active`'s `pending_frames` to enforce backpressure. See [460baf2](libp2p/rust-yamux@460baf2) # 0.13.1 - Fix WASM support using `instant::{Duration, Instant}` instead of `std::time::{Duration, Instant}`. See [PR 179](libp2p/rust-yamux#179). # 0.13.0 - Introduce dynamic stream receive window auto-tuning. While low-resourced deployments maintain the benefit of small buffers, high resource deployments eventually end-up with a window of roughly the bandwidth-delay-product (ideal) and are thus able to use the entire available bandwidth. See [PR 176](libp2p/rust-yamux#176) for performance results and details on the implementation. - Remove `WindowUpdateMode`. Behavior will always be `WindowUpdateMode::OnRead`, thus enabling flow-control and enforcing backpressure. See [PR 178](libp2p/rust-yamux#178). # 0.12.1 - Deprecate `WindowUpdateMode::OnReceive`. It does not enforce flow-control, i.e. breaks backpressure. Use `WindowUpdateMode::OnRead` instead. See [PR #177](libp2p/rust-yamux#177). # 0.12.0 - Remove `Control` and `ControlledConnection`. Users have to move to the `poll_` functions of `Connection`. See [PR #164](libp2p/rust-yamux#164). - Fix a bug where `Stream`s would not be dropped until their corresponding `Connection` was dropped. See [PR #167](libp2p/rust-yamux#167). ``` ### Next Steps - [x] deployment in versi-net and monitor metrics / CPU impact (extensively test this) cc @paritytech/networking --------- Signed-off-by: Alexandru Vasile <alexandru.vasile@parity.io>
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When yamux connection is closing it should:
GoAwayframe.But test showed that pending frames from
stream_receiversandGoAwayframe were not sent.Commits introducing this bug:
VecDequewithOption,which caused loss of pending frames,
because only last pending frame was stored in
Optiontrying to fix loss of pending frames.
Optionback toVecDeque,so all pending frames are stored again.
so pending frames are collected,
but not sent.
This PR provides test to reproduce it, and reverts 297e9eb and af8f693 to fix it.