Review round 1 on 0ce144d (FIX-FIRST):
F1: stock gthread never reaps a connection that never sends a byte; it
holds a worker_connections slot forever and at 1000 per worker the run
loop stops polling, wedging the worker permanently (survives the
attacker disconnecting). accept/on_client_socket_readable/
murder_keepalived now track such conns in a FIFO with a deadline
(HAPROXY_MGR_FIRST_BYTE_TIMEOUT, 10s) and close expired ones on every
loop pass, including the at-capacity branch.
F2: slowloris (1 header byte per <20s) never tripped the per-recv
timeout. A total request-line+headers deadline
(HAPROXY_MGR_HEADER_DEADLINE, 10s) is armed in handle() and cleared in
handle_request(); a 1s monitor loop shutdown(SHUT_RDWR)s expired
sockets. Armed per thread, not at accept, so legit requests queued
behind busy threads are never cut for waiting.
F4: monitor loop wrapped in try/except with logging; wedge threshold
1200s -> 3600s (multi-domain cert requests run 180s per domain).
F5: docstring now says the timeout bounds each whole sendall().
F6: warn when gunicorn != 23.0.0 (worker overrides gthread internals).
API key compared with hmac.compare_digest.
Tests: +3 production-shape (2x4) tests: 2050 idle conns reaped and
/health recovers while still held; 8 drip conns cut within the deadline
with /health responsive; slow-but-complete headers still served.
15 tests, in the Docker build gate.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
shadowdaoandClaude Opus 5.5
fd06b30d78