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fix(comms/rpc): detect early close in all cases (#4647)
Description --- - fix(rpc/server): detect stream interrupt when waiting for responses from domain service and when sending any data - fix(rpc/client): detect early response stream drop while reading responses - fix(rpc): correct value for number of sessions per peer - fix(base_node/sync): use faster/simpler mutex for sync session tracking - fix(base-node): set force_sync_peers conf from `base_node.force_sync_peers` - tests(comms/rpc): test for session handling when a response stream with large messages is interrupted - fix(p2p/liveness): pong event returns the latency of the last ping/pong Motivation and Context --- Whenever sync latency exceeds the max, the client interrupts the stream. The server rarely picks this up and since only one sync session is allowed, the client node can not resume syncing from the same node. fixes #4630 ref #4646 (fixes but duplicate config should be removed) fixes #4636 How Has This Been Tested? --- New perviously failing integration test, manually by syncing a new base node
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| Original file line number | Diff line number | Diff line change |
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| // Copyright 2022. The Tari Project | ||
| // | ||
| // Redistribution and use in source and binary forms, with or without modification, are permitted provided that the | ||
| // following conditions are met: | ||
| // | ||
| // 1. Redistributions of source code must retain the above copyright notice, this list of conditions and the following | ||
| // disclaimer. | ||
| // | ||
| // 2. Redistributions in binary form must reproduce the above copyright notice, this list of conditions and the | ||
| // following disclaimer in the documentation and/or other materials provided with the distribution. | ||
| // | ||
| // 3. Neither the name of the copyright holder nor the names of its contributors may be used to endorse or promote | ||
| // products derived from this software without specific prior written permission. | ||
| // | ||
| // THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, | ||
| // INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE | ||
| // DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, | ||
| // SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR | ||
| // SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, | ||
| // WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE | ||
| // USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. | ||
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| use std::{ | ||
| io, | ||
| pin::Pin, | ||
| task::{Context, Poll}, | ||
| }; | ||
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| use futures::Sink; | ||
| use tokio_stream::Stream; | ||
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| pub struct EarlyClose<TSock> { | ||
| inner: TSock, | ||
| } | ||
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| impl<T, TSock: Stream<Item = io::Result<T>> + Unpin> EarlyClose<TSock> { | ||
| pub fn new(inner: TSock) -> Self { | ||
| Self { inner } | ||
| } | ||
| } | ||
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| impl<TSock: Stream + Unpin> Stream for EarlyClose<TSock> { | ||
| type Item = TSock::Item; | ||
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| fn poll_next(mut self: Pin<&mut Self>, cx: &mut Context<'_>) -> Poll<Option<Self::Item>> { | ||
| Pin::new(&mut self.inner).poll_next(cx) | ||
| } | ||
| } | ||
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| impl<TItem, TSock, T> Sink<TItem> for EarlyClose<TSock> | ||
| where TSock: Sink<TItem, Error = io::Error> + Stream<Item = io::Result<T>> + Unpin | ||
| { | ||
| type Error = EarlyCloseError<T>; | ||
|
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| fn poll_ready(mut self: Pin<&mut Self>, cx: &mut Context<'_>) -> Poll<Result<(), Self::Error>> { | ||
| if let Poll::Ready(r) = Pin::new(&mut self.inner).poll_ready(cx) { | ||
| return Poll::Ready(r.map_err(Into::into)); | ||
| } | ||
| check_for_early_close(&mut self.inner, cx) | ||
| } | ||
|
|
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| fn start_send(mut self: Pin<&mut Self>, item: TItem) -> Result<(), Self::Error> { | ||
| Pin::new(&mut self.inner).start_send(item)?; | ||
| Ok(()) | ||
| } | ||
|
|
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| fn poll_flush(mut self: Pin<&mut Self>, cx: &mut Context<'_>) -> Poll<Result<(), Self::Error>> { | ||
| if let Poll::Ready(r) = Pin::new(&mut self.inner).poll_flush(cx) { | ||
| return Poll::Ready(r.map_err(Into::into)); | ||
| } | ||
| check_for_early_close(&mut self.inner, cx) | ||
| } | ||
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| fn poll_close(mut self: Pin<&mut Self>, cx: &mut Context<'_>) -> Poll<Result<(), Self::Error>> { | ||
| if let Poll::Ready(r) = Pin::new(&mut self.inner).poll_close(cx) { | ||
| return Poll::Ready(r.map_err(Into::into)); | ||
| } | ||
| check_for_early_close(&mut self.inner, cx) | ||
| } | ||
| } | ||
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| fn check_for_early_close<T, TSock: Stream<Item = io::Result<T>> + Unpin>( | ||
| sock: &mut TSock, | ||
| cx: &mut Context<'_>, | ||
| ) -> Poll<Result<(), EarlyCloseError<T>>> { | ||
| match Pin::new(sock).poll_next(cx) { | ||
| Poll::Ready(Some(Ok(msg))) => Poll::Ready(Err(EarlyCloseError::UnexpectedMessage(msg))), | ||
| Poll::Ready(Some(Err(err))) if err.kind() == io::ErrorKind::WouldBlock => Poll::Pending, | ||
| Poll::Pending => Poll::Pending, | ||
| Poll::Ready(Some(Err(err))) => Poll::Ready(Err(err.into())), | ||
| Poll::Ready(None) => Poll::Ready(Err( | ||
| io::Error::new(io::ErrorKind::BrokenPipe, "Connection closed").into() | ||
| )), | ||
| } | ||
| } | ||
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| #[derive(Debug, thiserror::Error)] | ||
| pub enum EarlyCloseError<T> { | ||
| #[error(transparent)] | ||
| Io(#[from] io::Error), | ||
| #[error("Unexpected message")] | ||
| UnexpectedMessage(T), | ||
| } | ||
|
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| impl<T> EarlyCloseError<T> { | ||
| pub fn io(&self) -> Option<&io::Error> { | ||
| match self { | ||
| Self::Io(err) => Some(err), | ||
| _ => None, | ||
| } | ||
| } | ||
|
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| pub fn unexpected_message(&self) -> Option<&T> { | ||
| match self { | ||
| EarlyCloseError::UnexpectedMessage(msg) => Some(msg), | ||
| _ => None, | ||
| } | ||
| } | ||
| } |
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