Summary
Improves HTTP parallel download recovery while retaining the v2.7.1 range scheduling used for normal transfers. No configuration or RPC changes are required.
Fixed
Early HTTP 403 responses no longer unnecessarily reduce concurrency for otherwise healthy parallel downloads.
HTTP 429/503 overload responses no longer treat pending requests as failed capacity observations or repeatedly reduce concurrency for the same request generation. Concurrency recovers from ongoing payload progress without waiting for an entire range to finish.
Extra tail requests no longer bypass retry backoff while failed ranges are waiting to retry or awaiting their first payload. Existing completed data and normal tail scheduling are preserved.