Joseph Doherty 5fdeaf613f feat(dcl): failover on repeated unstable connections (connect-then-stale pattern) ...

Previously, failover only triggered when ConnectAsync failed consecutively.
If a connection succeeded but went stale quickly (e.g., heartbeat timeout),
the failure counter reset on each successful connect and failover never
triggered.

Added a separate _consecutiveUnstableDisconnects counter that increments
when a connection lasts less than StableConnectionThreshold (60s) before
disconnecting. When this counter reaches failoverRetryCount, the actor
fails over to the backup endpoint. Stable connections (lasting >60s)
reset this counter.

The original connection-failure failover path is unchanged.

2026-03-24 16:19:39 -04:00

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