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fix(rustproxy-http): improve HTTP/3 connection reuse and clean up stale proxy state

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This commit is contained in:
Jürgen Kunz
2026-03-26 07:05:57 +00:00
parent 437d1a3329
commit a3d8a3a388
14 changed files with 185 additions and 225 deletions
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18
rust/crates/rustproxy-metrics/src/collector.rs
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@@ -624,6 +624,24 @@ impl MetricsCollector {
self.ip_pending_tp.retain(|k, _| self.ip_connections.contains_key(k));
self.ip_throughput.retain(|k, _| self.ip_connections.contains_key(k));
self.ip_total_connections.retain(|k, _| self.ip_connections.contains_key(k));
// Safety-net: prune orphaned backend error/stats entries for backends
// that have no active or total connections (error-only backends).
// These accumulate when backend_connect_error/backend_handshake_error
// create entries but backend_connection_opened is never called.
let known_backends: HashSet<String> = self.backend_active.iter()
.map(|e| e.key().clone())
.chain(self.backend_total.iter().map(|e| e.key().clone()))
.collect();
self.backend_connect_errors.retain(|k, _| known_backends.contains(k));
self.backend_handshake_errors.retain(|k, _| known_backends.contains(k));
self.backend_request_errors.retain(|k, _| known_backends.contains(k));
self.backend_connect_time_us.retain(|k, _| known_backends.contains(k));
self.backend_connect_count.retain(|k, _| known_backends.contains(k));
self.backend_pool_hits.retain(|k, _| known_backends.contains(k));
self.backend_pool_misses.retain(|k, _| known_backends.contains(k));
self.backend_h2_failures.retain(|k, _| known_backends.contains(k));
self.backend_protocol.retain(|k, _| known_backends.contains(k));
}
/// Remove per-route metrics for route IDs that are no longer active.