tls_handshake_timeout_secs (default 10s, must be > 0) wraps
tls_acceptor.accept() in tokio::time::timeout so stalled handshakes
(slowloris / crawler slow-handshake vector) can no longer hold an FD +
semaphore permit indefinitely. Config plumbing through FullConfig /
StaticConfig / validation / reload diff + docs.
Critical:
- C1: Set server-side idle/keep-alive timeouts on both hyper builders
(http2 keep_alive_interval=15s + keep_alive_timeout, http1
header_read_timeout). Both builders now set TokioTimer (required to
avoid runtime panic). Prevents FD exhaustion from abandoned TLS
connections — the root cause of the 2026-07-24 outage.
- C2: Add Semaphore(max_connections) gating the accept loop. Provides
backpressure via OS TCP backlog when all permits are taken.
Warnings:
- W1: Add SIGUSR1 log-reopen handler. New ReopenableFileWriter
(Arc<ArcSwap<File>> via custom MakeWriter) atomically swaps the log
file. Enables postrotate logrotate without copytruncate, which caused
the 1.15GB sparse file that wedged fail2ban.
- W2: Set pool_max_idle_per_host(10) on both upstream clients, bounding
idle upstream connections per host.
- W3: Add connection_idle_timeout_secs to StaticConfig (default 60).
- W4: Add max_connections to StaticConfig (default 1024).
Both new fields are validated (> 0) and included in static config drift
detection on reload. Docs (config.md, README, ADR-009) updated.
Remove src/admin/socket.rs and replace with Bearer token HTTP auth on the
health check listener (port 9900). New src/admin/auth.rs provides SHA-256
key hashing with constant-time comparison; src/admin/handler.rs implements
/admin/reload, /admin/status, and /admin/rotate-key. Admin endpoints return
404 when disabled (empty admin_key_path), 401 on bad auth. Config field
renamed admin_socket_path → admin_key_path. Deployment files updated for
key file mount instead of socket directory.
Add host part validation to is_valid_upstream: IPv4/IPv6 addresses must parse
as valid IpAddr, bracket-enclosed hosts must parse as IPv6, DNS names must
pass is_valid_hostname. Previously, values like '!!!bad!!!:3000' would pass.
All #[allow(dead_code)] annotations on now-used items have been removed
(acceptor.rs, acme.rs, config.rs, static_config.rs). #[non_exhaustive]
added to TlsMode, ProxyError, AdminSocketError, and ValidationError
with wildcard match arms in main.rs for the non-exhaustive enums.
Change http_port type from u16 to u32 to allow out-of-range values to be
caught by validation. Add HttpPortInvalid error variant and validation check
for http_port > 65535. Add test for http_port=65536 producing HttpPortInvalid.
http_port=0 (disabled) remains valid per existing test.
Add routing table (HashMap<String, SiteConfig>) to DynamicConfig for
O(1) host lookup. Implement normalize_host (lowercase + strip port)
per RFC 7230 §2.7.3. Add proxy_handler that routes /health to 200,
missing Host to 400, unknown host to 404, and known host to 200.
Routing table updates atomically via ArcSwap.
Add ConfigReloadHandle with Arc<ArcSwap<DynamicConfig>> for lock-free reads
on the request hot path and tokio::sync::Mutex-serialized reload. Add static
config change detection via diff_static_config(). Add DynamicConfig validation
(rate_limit, body_limit, site checks). Add PartialEq derives to config types.
Include unit tests for ArcSwap swap visibility, invalid config rejection, and
concurrent reload serialization.
- Add health.rs module with start_health_check_listener() that binds to
127.0.0.1:{health_check_port} and serves GET /health returning 200 OK
with empty body
- Add health_route() in proxy/handler.rs for HTTPS listener fallback
- Add port conflict detection in config validation: health_check_port
must not conflict with listener ports on 127.0.0.1/localhost/0.0.0.0
- health_check_port = 0 disables the separate listener (handled at call
site)
- Add unit and integration tests for health check functionality
glm-5.3-flash
glm-5.2
glm-5.1