floatdrop / zoxy / 28698631268

Build # 28698631268

Build Type

push

github

Committed by floatdrop

Commit Message

drain: graceful shutdown — SIGTERM drains workers, completes in-flight, then exits (Phase 4 slice 1)

Trigger: signals blocked everywhere + signalfd on main; each worker has a
recv pending on a socketpair, so the poke is an ordinary ring completion.
Per worker: cancel accept, close the listener (refuse > queue-and-ignore),
close idle keep-alive connections politely, force Connection: close on
in-flight responses via the existing injection, clamp every deadline to
now + drain_timeout so the ticking timers force-close stragglers. Exit
when every pool slot and server op drained; a second signal exits now.

Pool grows an in_use marker (drain sweep + honest dump_pool); the test IO
listener close now RSTs its accept queue like the kernel; HealthChecker
stop() cancels in-flight probes so a black-holed endpoint can't pin exit.

Verified: sim drains a third of iterations at a random step (seeds
0..2000), three integration tests, the zero-alloc gate drains inside it,
process-level idle+wedged+mid-drain mix, 60k req/s sanity bench in-band.

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>

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