Two DoS/interop hardening items:
1. Bound write_framed by WRITE_TIMEOUT (10s) so a slow-reader
attacker can't indefinitely hold a worker task and its connection
permit. Symmetric to the existing handshake timeout.
2. Advertise ALPN "dot" per RFC 7858 §3.2. Required by some strict
DoT clients (newer Apple stacks, some Android versions). rustls
ServerConfig exposes alpn_protocols as a pub field so we set it
after with_single_cert:
- load_tls_config (user-provided cert/key): set directly
- self_signed_tls (new, replaces fallback_tls): builds a fresh
DoT-specific TLS config via build_tls_config with the ALPN list
build_tls_config now takes an `alpn: Vec<Vec<u8>>` parameter so
DoT and the proxy can pass different ALPN lists while sharing the
same CA. Proxy callers pass Vec::new() (unchanged behavior).
Dropped the ctx.tls_config reuse branch: we can't mutate a shared
Arc<ServerConfig> to add DoT-specific ALPN, and reusing the proxy
config was already quietly broken re: SAN (proxy cert covers
*.{tld}, not the DoT server's bind hostname/IP).
Added dot_negotiates_alpn test that asserts conn.alpn_protocol()
returns Some(b"dot") after handshake. 126/126 tests pass.
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
Refactor handle_query into transport-agnostic resolve_query that returns
a BytePacketBuffer, keeping the UDP path zero-alloc. Add a TLS listener
on port 853 with persistent connections, idle timeout, connection limits,
and coalesced writes. Supports user-provided certs or self-signed CA
fallback. Includes 5 integration tests.
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
* feat: Windows DNS configuration via netsh
numa install/uninstall now set/restore system DNS on Windows via
netsh. Parses ipconfig /all per-interface (adapter name, DHCP status,
DNS servers), saves backup to %APPDATA%\numa\original-dns.json, and
restores on uninstall (DHCP or static with secondary servers).
Handles localization (German adapter/DHCP/DNS labels), disconnected
adapters, multiple interfaces, and missing admin privileges. Adds IP
validation to discover_windows() for consistency.
No Windows Service or CA trust yet — user runs numa in a terminal.
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
* ci: add cargo test to Windows CI job
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
* ci: upload Windows binary as artifact for testing
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
* fix: SRTT decay tests panic on Windows due to Instant underflow
On Windows, Instant starts near boot time — subtracting large
durations panics. Use checked_sub with a process-start fallback.
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
* fix: SRTT decay tests use binary search for max Instant age
Replace age() helper with set_age_secs() on SrttCache that
binary-searches for the maximum subtractable duration. Prevents
panic on Windows (Instant starts at boot) while still producing
the oldest representable instant for correct decay calculations.
Also removes ephemeral test-ubuntu.sh from git.
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
* fix: use ProgramData for Windows DNS backup path
APPDATA differs between user and admin contexts — install runs as
admin but uninstall might resolve a different APPDATA. Use
ProgramData which is consistent across elevation contexts.
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
* feat: disable Dnscache on Windows install, re-enable on uninstall
Windows DNS Client (Dnscache) holds port 53 at kernel level and
can't be stopped via sc/net stop. Disable via registry during
install (requires reboot), re-enable on uninstall.
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
* fix: rewrite SRTT decay tests as pure functions
Decay tests manipulated Instant timestamps which panics on Windows
(Instant can't go before boot time). Rewrite to test decay_for_age()
directly — a pure function taking srtt_ms and age_secs, no platform
dependency.
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
* fix: use Quad9 IP (9.9.9.9) for DoH fallback, not hostname
DoH to dns.quad9.net requires DNS to resolve the hostname, which
creates a chicken-and-egg loop when numa IS the system resolver
(e.g. after numa install on Windows). Using the IP directly avoids
the bootstrap dependency.
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
* refactor: extract DOH_FALLBACK constant
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
* refactor: extract QUAD9_IP constant
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
* refactor: remove dead test helpers, fix constant placement
Remove unused get_srtt_ms() and saturated_penalty_cache() left over
from SRTT test rewrite. Move QUAD9_IP/DOH_FALLBACK after use block.
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
* fix: ignore ConnectionReset on UDP socket (Windows ICMP error)
Windows delivers ICMP port-unreachable as ConnectionReset on the
next UDP recv_from, crashing numa. Linux/macOS silently ignore these.
Catch and continue the recv loop.
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
* feat: auto-start numa on Windows boot via registry Run key
Without a Windows Service, rebooting after numa install leaves DNS
broken (pointing at 127.0.0.1 with nothing listening). Register
numa in HKLM\...\Run so it starts automatically. Removed on
uninstall.
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
* docs: update README, Windows plan, and launch drafts for Windows support
- README: platform-specific Quick Start, install/uninstall table
- Windows plan: Phase 2 complete, Phase 3 scoped
- Launch drafts: updated "Does it support Windows?" response
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
* chore: remove docs from git tracking (already gitignored)
docs/ is in .gitignore but files were force-added. Remove from
tracking — files remain on disk.
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
---------
Co-authored-by: Claude Opus 4.6 <noreply@anthropic.com>
* feat: auto recursive mode, fix Linux install
Auto mode (new default): probes a root server on startup; uses
recursive resolution if outbound DNS works, falls back to Quad9 DoH
if blocked. Dashboard shows mode indicator (green/yellow).
Linux install fixes:
- Add DNSStubListener=no to resolved drop-in (frees port 53)
- Configure DNS before starting service (correct ordering)
- Skip 127.0.0.53 in upstream detection
- `numa install` now does everything (service + DNS + CA)
- `numa uninstall` mirrors install (stop service + restore DNS)
- Extract is_loopback_or_stub() for consistent filtering
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
* feat: enable DNSSEC validation by default
With recursive as the default mode, DNSSEC validation completes the
trustless resolution chain. Strict mode remains off by default.
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
* feat: forward search domains to VPC resolver on Linux
Parse search/domain lines from resolv.conf and create conditional
forwarding rules to the original nameserver or AWS VPC resolver
(169.254.169.253). Fixes internal hostname resolution on cloud VMs
where recursive mode can't resolve private DNS zones.
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
* refactor: single-pass resolv.conf parsing, eliminate redundancies
Parse resolv.conf once for both upstream and search domains instead
of 2-3 reads. Extract CLOUD_VPC_RESOLVER constant. Use &'static str
for mode in StatsResponse. Remove dead read_upstream_from_file.
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
* fix: macOS install health check, harden recursive probe
Verify numa is listening (API port) before redirecting system DNS on
macOS — if the service fails to start (e.g. port 53 in use), unload
the service and abort instead of breaking DNS. Probe up to 3 root
hints before declaring recursive mode unavailable. Validate IPs from
resolvectl to avoid IPv6 fragment extraction. Extract DEFAULT_API_PORT
constant.
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
* fix: widen make_rule cfg gate to include Linux
make_rule was gated to macOS-only but discover_linux() calls it for
search domain forwarding rules. CI failed on Linux with E0425.
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
* feat: forward mode as default, recursive opt-in
Forward mode (transparent proxy to system DNS) is now the default.
Recursive and auto modes are explicit opt-in via config. This avoids
bypassing corporate DNS policies, captive portals, VPC private zones,
and parental controls on first install.
- Move #[default] from Auto to Forward on UpstreamMode
- DNSSEC defaults to off (no-op in forward mode)
- 3-way match in main: Forward/Recursive/Auto with clean separation
- Post-install message suggests mode = "recursive" for sovereignty
- Update README, site, and launch drafts messaging
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
---------
Co-authored-by: Claude Opus 4.6 <noreply@anthropic.com>
* feat: resolve .numa services to LAN IP for remote clients
Remote DNS clients (e.g. phones on same WiFi) received 127.0.0.1 for
local .numa services, which is unreachable from their perspective.
Now returns the host's LAN IP when the query originates from a
non-loopback address. Also auto-widens proxy bind to 0.0.0.0 when
DNS is already public, and adds a startup warning when the proxy
remains localhost-only.
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
* fix: respect proxy bind_addr config, don't auto-widen
The auto-widen silently overrode an explicit config value — the user's
config should be the source of truth. Now the proxy always uses the
configured bind_addr, and the warning fires whenever it's 127.0.0.1.
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
* docs: update proxy bind_addr comment in example config
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
---------
Co-authored-by: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
* feat: in-flight query coalescing for recursive resolver
When multiple queries for the same (domain, qtype) arrive concurrently
and all miss the cache, only the first triggers recursive resolution.
Subsequent queries wait on a broadcast channel for the result.
Prevents thundering herd where N concurrent cache misses each
independently walk the full NS chain, compounding timeouts.
Uses InflightGuard (Drop impl) to guarantee map cleanup on
panic/cancellation — prevents permanent SERVFAIL poisoning.
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
* style: add InflightMap type alias for clippy
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
* feat: add COALESCED query path and coalescing tests
Followers in the inflight coalescing path now log as COALESCED instead
of RECURSIVE, making it visible in the dashboard when queries were
deduplicated vs independently resolved. Adds 10 tests covering
InflightGuard cleanup, broadcast mechanics, and concurrent handle_query
coalescing through a mock TCP DNS server.
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
* style: cargo fmt
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
* refactor: extract acquire_inflight, rewrite tests against real code
Move Disposition enum and inflight acquisition logic into a standalone
acquire_inflight() function. Rewrite 4 tests that were exercising tokio
primitives to call the real coalescing code path instead.
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
---------
Co-authored-by: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
* feat: SRTT-based nameserver selection for recursive resolver
BIND-style Smoothed RTT (EWMA) tracking per NS IP address. The resolver
learns which nameservers respond fastest and prefers them, eliminating
cascading timeouts from slow/unreachable IPv6 servers.
- New src/srtt.rs: SrttCache with record_rtt, record_failure, sort_by_rtt
- EWMA formula: new = (old * 7 + sample) / 8, 5s failure penalty, 5min decay
- TCP penalty (+100ms) lets SRTT naturally deprioritize IPv6-over-TCP
- Enabled flag embedded in SrttCache (no-op when disabled)
- Batch eviction (64 entries) for O(1) amortized writes at capacity
- Configurable via [upstream] srtt = true/false (default: true)
- Benchmark script: scripts/benchmark.sh (full, cold, warm, compare-all)
- Benchmarks show 12x avg improvement, 0% queries >1s (was 58%)
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
* feat: show DNSSEC and SRTT status in dashboard + API
Add dnssec and srtt boolean fields to /stats API response.
Display on/off indicators in the dashboard footer.
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
* fix: apply SRTT decay before EWMA so recovered servers rehabilitate
Without decay-before-EWMA, a server penalized at 5000ms stayed near
that value even after recovery — the stale raw penalty was used as the
EWMA base instead of the decayed estimate. Extract decayed_srtt()
helper and call it in record_rtt() before the smoothing step.
Also restores removed "why" comments in send_query / resolve_recursive.
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
* docs: add install/upgrade instructions, smarter benchmark priming
README: document `numa install`, `numa service`, Homebrew upgrade,
and `make deploy` workflows. Benchmark: replace fixed `sleep 4` with
`wait_for_priming` that polls cache entry count for stability.
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
---------
Co-authored-by: Claude Opus 4.6 <noreply@anthropic.com>
* feat: DNS-over-HTTPS upstream forwarding
Encrypt upstream queries via DoH — ISPs see HTTPS traffic on port 443,
not plaintext DNS on port 53. URL scheme determines transport:
https:// = DoH, bare IP = plain UDP. Falls back to Quad9 DoH when
system resolver cannot be detected.
- Upstream enum (Udp/Doh) with Display and PartialEq
- BytePacketBuffer::from_bytes constructor
- reqwest http2 feature for DoH server compatibility
- network_watch_loop guards against DoH→UDP silent downgrade
- 5 new tests (mock DoH server, HTTP errors, timeout)
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
* style: cargo fmt
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
* docs: add DoH to README — Why Numa, comparison table, roadmap
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
---------
Co-authored-by: Claude Opus 4.6 <noreply@anthropic.com>
HTTPS proxy certs were generated once at startup. Services added at
runtime via API or LAN discovery got "not secure" in the browser
because their SAN wasn't in the cert. Now the cert is regenerated
on every service add/remove and swapped atomically via ArcSwap.
In-flight connections are unaffected.
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
- banner box width adapts to longest value (fixes overflow with long paths)
- hoist h() HTML escape function to script top, remove 3 local copies
- serve_ca: add Cache-Control: public, max-age=86400
- restore log path in dashboard footer alongside new config/data fields
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
- Add lan_enabled to ServerCtx
- Add lan field to /stats API (enabled, peer count)
- Dashboard shows "LAN off" (dim) or "LAN on · N peers" (green)
- Tooltip shows enable command or mDNS service type
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
- numa lan on/off toggles LAN discovery in numa.toml
- Writes [lan] section if missing, updates enabled if present
- Colored output with restart hint
- README: add lan on/off to help text
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
- LAN discovery disabled by default (opt-in via [lan] enabled = true)
- Replace custom JSON multicast (239.255.70.78:5390) with standard mDNS
(_numa._tcp.local on 224.0.0.251:5353) using existing DNS parser
- Instance ID in TXT record for multi-instance self-filtering
- API and proxy bind to 127.0.0.1 by default (0.0.0.0 when LAN enabled)
- Path-based routing: longest prefix match with optional prefix stripping
via [[services]] routes = [{path, port, strip?}]
- REST API: GET/POST/DELETE /services/{name}/routes
- Dashboard shows route lines per service when configured
- Segment-boundary route matching (prevents /api matching /apiary)
- Route path validation (rejects path traversal)
Closes#11
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
LAN IP checked every 5s (cheap UDP socket call). Full upstream
re-detection runs every 30s as safety net, or immediately when
LAN IP changes. Reduces worst-case network switch recovery from
30s to 5s.
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
When numa install is active, scutil --dns only returns 127.0.0.1.
Previously fell back to 9.9.9.9 (Quad9) which fails on networks
that block external DNS. Now reads DHCP-provided DNS from
ipconfig getpacket en0/en1 as intermediate fallback before Quad9.
Tested on a network that blocks 8.8.8.8, 9.9.9.9, 1.1.1.1 but
allows ISP DNS (213.154.124.25) — Numa now auto-detects and uses it.
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
Always detect network changes (LAN IP, upstream, peers) regardless
of upstream config. LAN IP is now tracked in ServerCtx and updated
every 30s — multicast announcements use the current IP instead of
the startup IP. Upstream re-detection still only runs when
auto-detected. Peer flush triggers on any network change.
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
Upstream DNS was resolved once at startup and never updated. Switching
Wi-Fi networks made all queries fail until restart.
Now spawns a background task (every 30s) that re-runs system DNS
discovery and swaps the upstream atomically if it changed. Also flushes
stale LAN peers from the old network on change.
Only activates when upstream is auto-detected (not explicitly configured).
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
Numa instances on the same network auto-discover each other's .numa
services. No config, no cloud — just multicast on 239.255.70.78:5390.
- PeerStore with lazy expiry (90s timeout, 30s broadcast interval)
- DNS resolves remote .numa services to peer's LAN IP (not localhost)
- Proxy forwards to peer IP for remote services
- Graceful degradation if multicast bind fails
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
HTTP reverse proxy on port 80 lets developers use clean domain names
(frontend.numa, api.numa) instead of localhost:PORT. Includes WebSocket
upgrade support for HMR, TCP health checks, dashboard UI panel, and
REST API for service management. numa.numa is preconfigured for the
dashboard itself.
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
Kills the running process and lets launchd/systemd respawn it
with the updated binary. DNS stays configured throughout.
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
- Default upstream auto-detected from system resolver (scutil/resolv.conf)
instead of hardcoding Google 8.8.8.8. Falls back to Quad9 (9.9.9.9).
- Single scutil --dns pass for both upstream detection and forwarding rules
- Linux: reads backup resolv.conf if current only has loopback
- Service start/stop now couples DNS config (install on start, uninstall on stop)
- Install script for one-line binary install from GitHub Releases
- GitHub Actions release workflow: builds for macOS/Linux x86_64/aarch64
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
- numa service start/stop/status commands (launchd + systemd)
- Dashboard footer shows log paths (macOS + Linux) and GitHub link
- Help text updated with all service commands
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
numa install — saves current DNS, sets all network services to 127.0.0.1
numa uninstall — restores original DNS from ~/.numa/original-dns.json
numa help — shows usage
macOS: uses networksetup to enumerate services and set/restore DNS.
Linux: stubs with instructions for manual setup.
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
- DNS-level ad blocking: 385K+ domains via Hagezi Pro blocklist, subdomain
matching, one-click allowlist, pause/toggle, background refresh every 24h
- Live dashboard at :5380 with real-time stats, query log, override
management (create/edit/delete), blocking controls
- System DNS auto-discovery: parses scutil --dns on macOS to find
conditional forwarding rules (Tailscale, VPN split-DNS)
- REST API expanded to 18 endpoints (blocking, overrides, diagnostics)
- Startup banner with colored system info
- Performance benchmarks (bench/dns-bench.sh)
- Landing page updated with new positioning and comparison table
- CI, Dockerfile, LICENSE, development plan docs
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
