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ae94ed1728
Salvaged from #35626 (banditburai) and re-scoped after maintainers landed the parent-death watchdog (slash_worker.py) and PTY process-group teardown (pty_bridge.py) directly on main. Those pieces are intentionally NOT included here — this carries only what is still missing: - C1 disconnect reap: ws.py's `finally` only re-pointed the dead transport at stdio. `_close_sessions_for_transport` now reaps `close_on_disconnect` sessions and schedules the grace-reap for the rest, offloaded via `asyncio.to_thread` so the blocking worker.close() + DB write never stalls the uvicorn loop. - C2 create/close orphan race: `_attach_worker` stores the worker iff `_sessions.get(sid) is session` under the lock (else closes it), applied at every spawn site incl. the post-turn `_restart_slash_worker`. - Single idempotent teardown funnel: session.close, WS disconnect, the generous-TTL idle reaper, shutdown, and the WS grace-reap all reach `_close_session_by_id` → `_teardown_session`; `_finalized`/`_closed` flags make concurrent/double teardown a no-op. `_sessions_lock` upgraded to RLock. - uvicorn `ws_ping_interval/timeout=20s` so a half-open socket (reverse-proxy 524) becomes a `WebSocketDisconnect` and the C1 path runs. Plus two review-driven hardening fixes (mine): - `session.active_list` now skips `_finalized` sessions so the footer "N sessions" count reflects attachable sessions instead of only ever growing until restart (#38950). Keys on `_finalized` only, NOT the stdio sentinel, so a standalone `hermes --tui` session stays visible. - `_schedule_ws_orphan_reap._reap` pops via `_close_session_by_id` (under `_sessions_lock`) instead of `_sessions.pop` under the unrelated `_session_resume_lock` (#39591); the resume_lock now only guards the orphan re-check against `session.resume`. - Float env knobs (`HERMES_SLASH_WATCHDOG_*`, `HERMES_TUI_SESSION_TTL_S`) parse with a fallback helper so a malformed value can't crash the worker at import. Fixes #32377 Fixes #38950 Addresses #22855 Co-authored-by: banditburai <123342691+banditburai@users.noreply.github.com> Co-authored-by: kshitijk4poor <82637225+kshitijk4poor@users.noreply.github.com> |
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