v3.11.1 — 2026-04-21
Fixes
- Concurrency slot leak on subprocess timeout (#37). The request-timeout handler called
proc.kill("SIGTERM")without decrementingstats.activeRequests. A subprocess stuck in a syscall that ignored SIGTERM would hold its slot until (or beyond) the 5s SIGKILL escalation actually reaped it. Slot release is now wired toproc.once("exit", cleanup)so every termination path — normal close, error, SIGTERM, SIGKILL — releases the slot exactly once.