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fix(network): Reconnect with peers after brief network interruption #7853

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merged 2 commits into from
Oct 27, 2023
Merged

fix(network): Reconnect with peers after brief network interruption #7853

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08d3a50
Fixes bug where Zebra won't reconnect to peers after brief loss of ne…
arya2 Oct 26, 2023
5f3bf47
only dial on timercrawl when theres a new address or zero active outb…
arya2 Oct 27, 2023
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9 changes: 5 additions & 4 deletions zebra-network/src/peer_set/initialize.rs
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Original file line number Diff line number Diff line change
Expand Up @@ -896,7 +896,7 @@ where
// There weren't any peers, so try to get more peers.
debug!("demand for peers but no available candidates");

crawl(candidates, demand_tx).await?;
crawl(candidates, demand_tx, false).await?;

Ok(DemandCrawlFinished)
}
Expand All @@ -918,7 +918,7 @@ where
"crawling for more peers in response to the crawl timer"
);

crawl(candidates, demand_tx).await?;
crawl(candidates, demand_tx, true).await?;

Ok(TimerCrawlFinished)
}
Expand Down Expand Up @@ -957,11 +957,12 @@ where
}

/// Try to get more peers using `candidates`, then queue a connection attempt using `demand_tx`.
/// If there were no new peers, the connection attempt is skipped.
/// If there were no new peers and `should_always_dial` is false, the connection attempt is skipped.
#[instrument(skip(candidates, demand_tx))]
async fn crawl<S>(
candidates: Arc<futures::lock::Mutex<CandidateSet<S>>>,
mut demand_tx: futures::channel::mpsc::Sender<MorePeers>,
should_always_dial: bool,
) -> Result<(), BoxError>
where
S: Service<Request, Response = Response, Error = BoxError> + Send + Sync + 'static,
Expand All @@ -976,7 +977,7 @@ where
result
};
let more_peers = match result {
Ok(more_peers) => more_peers,
Ok(more_peers) => more_peers.or_else(|| should_always_dial.then_some(MorePeers)),
Err(e) => {
info!(
?e,
Expand Down