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## Summary
`/api/nodes/{pk}/paths` (paths-through-node) attributed the same
transmission to **every** prefix-sibling when their hop bytes collided
(e.g. 5 nodes with `c0…` on staging). Querying any of them returned the
tx — visible bug per #1352 where Kpa Roof Solar's view included a packet
whose actual relay was C0ffee SF.
## Root cause
`handleNodePaths` has two branches:
1. **Canonical resolved_path branch (#1278)** — when a tx has a
persisted `resolved_path`, membership is decided from the stored
pubkeys. This branch is correct.
2. **Fallback branch** — when `resolved_path` is NULL/missing, the code
invoked `pm.resolveWithContext(hop, []string{lowerPK}, graph)` to
re-resolve hops. The `hopContext=[lowerPK]` anchors the resolver on the
*queried target*, so the tier-2 (geo-proximity) / tier-3
(GPS+observation-count) tiers preferentially pick the target. Every
`paths-through-X` call for any `X` in the sibling set then resolved the
colliding hop to `X` and counted the tx — wrong-node attribution across
the whole sibling set.
## Fix
Server-side, query-time only. **No DB writes** (`#1289` read-only
invariant preserved). **No canonical-branch changes** — only the
fallback path.
In the fallback branch, accept a biased-resolver match as evidence of
target membership *only* when **either**:
- (a) the tx is already pre-confirmed via the resolved_path index hit or
SQL `INSTR(resolved_path, pubkey)` check, **or**
- (b) the hop's prefix candidate set is unique (`len(pm.m[hop]) <= 1`) —
no collision, no bias possible.
Multi-candidate prefix hops without independent SQL/index confirmation
are now treated as ambiguous and excluded from paths-through. Same rule
applied to the unresolvable-hop sub-case (when `resolveHop` returns nil
but the prefix could match the target).
## Which canonical resolved_path source is used
This PR does **not** introduce a new resolved_path source. It piggybacks
on what's already in place:
- **Canonical branch**: `s.store.fetchResolvedPathForTxBest(tx)` →
SQLite `observations.resolved_path` (populated upstream by the
hop-disambiguator from #1198/#1200/#1235).
- **Pre-confirmation in fallback**: `confirmedByFullKey` (membership
index `s.store.byPathHop[lowerPK]`) and `confirmedBySQL`
(`s.store.confirmResolvedPathContains` → `INSTR(LOWER(resolved_path),
"pubkey")`).
So when canonical data exists, attribution is purely persisted-path
driven; when it doesn't, attribution requires either a SQL pubkey hit or
a unique prefix candidate. Biased resolution alone is no longer
sufficient.
## TDD — red, then green
Two new tests in `cmd/server/paths_through_collision_1352_test.go`:
1. `TestHandleNodePaths_PrefixCollision_1352` — canonical branch
(already green via #1278). 3 nodes share `c0`, tx canonical
resolved_path = [B]. Only paths-through-B includes the tx.
2. `TestHandleNodePaths_PrefixCollision_1352_FallbackBranch` — **red**
before the fix. 3 GPS-having `c0` siblings, NULL resolved_path. Before:
A=1 B=1 C=1 (wrong-node attribution on all). After: ≤1 attribution.
Mutation: reverting the `len(pm.m[hop]) <= 1` guard in `routes.go`
restores the failing red state.
Existing tests preserved:
- `TestHandleNodePaths_PrefixCollisionExclusion` (#929) — still green.
- `TestHandleNodePaths_AnchorBiasInconsistency_Issue1278` (#1278) —
still green.
- Full `go test ./...` on `cmd/server` and `cmd/ingestor`: green.
## Acceptance criteria (from #1352)
- [x] On node detail for Kpa Roof Solar-shape, packet where actual relay
is C0ffee SF does NOT appear in paths-through (canonical branch test).
- [x] On node detail for C0ffee SF-shape, that same packet DOES appear
(canonical branch test).
- [x] Ambiguous fallback case (NULL resolved_path,
multi-prefix-collision) attributes to ≤1 node (fallback test).
- [x] Mutation test: removing the uniqueness guard makes the fallback
test fail.
## Out of scope
- Frontend UX for "ambiguous (N candidates)" badge (separate UX issue).
- Wider hop-disambiguator changes (#1198 family).
Fixes #1352
---------
Co-authored-by: bot <bot@example.com>
Co-authored-by: corescope-bot <bot@corescope>
CoreScope
High-performance mesh network analyzer powered by Go. Sub-millisecond packet queries, ~300 MB memory for 56K+ packets, real-time WebSocket broadcast, full channel decryption.
Self-hosted, open-source MeshCore packet analyzer. Collects MeshCore packets via MQTT, decodes them in real time, and presents a full web UI with live packet feed, interactive maps, channel chat, packet tracing, and per-node analytics.
⚡ Performance
The Go backend serves all 40+ API endpoints from an in-memory packet store with 5 indexes (hash, txID, obsID, observer, node). SQLite is for persistence only — reads never touch disk.
| Metric | Value |
|---|---|
| Packet queries | < 1 ms (in-memory) |
| All API endpoints | < 100 ms |
| Memory (56K packets) | ~300 MB (vs 1.3 GB on Node.js) |
| WebSocket broadcast | Real-time to all connected browsers |
| Channel decryption | AES-128-ECB with rainbow table |
See PERFORMANCE.md for full benchmarks.
✨ Features
📡 Live Trace Map
Real-time animated map with packet route visualization, VCR-style playback controls, and a retro LCD clock. Replay the last 24 hours of mesh activity, scrub through the timeline, or watch packets flow live at up to 4× speed.
📦 Packet Feed
Filterable real-time packet stream with byte-level breakdown, Excel-like resizable columns, and a detail pane. Toggle "My Nodes" to focus on your mesh.
🗺️ Network Overview
At-a-glance mesh stats — node counts, packet volume, observer coverage.
📊 Node Analytics
Per-node deep dive with interactive charts: activity timeline, packet type breakdown, SNR distribution, hop count analysis, peer network graph, and hourly heatmap.
💬 Channel Chat
Decoded group messages with sender names, @mentions, timestamps — like reading a Discord channel for your mesh.
📱 Mobile Ready
Full experience on your phone — proper touch controls, iOS safe area support, and a compact VCR bar.
And More
- 11 Analytics Tabs — RF, topology, channels, hash stats, distance, route patterns, and more
- Node Directory — searchable list with role tabs, detail panel, QR codes, advert timeline
- Packet Tracing — follow individual packets across observers with SNR/RSSI timeline
- Observer Status — health monitoring, packet counts, uptime, per-observer analytics
- Hash Collision Matrix — detect address collisions across the mesh
- Channel Key Auto-Derivation — hashtag channels (
#channel) keys derived via SHA256 - Multi-Broker MQTT — connect to multiple brokers with per-source IATA filtering
- Dark / Light Mode — auto-detects system preference, map tiles swap too
- Theme Customizer — design your theme in-browser, export as
theme.json - Global Search — search packets, nodes, and channels (Ctrl+K)
- Shareable URLs — deep links to packets, channels, and observer detail pages
- Protobuf API Contract — typed API definitions in
proto/ - Accessible — ARIA patterns, keyboard navigation, screen reader support
Quick Start
Pre-built Image (Recommended)
No build step required — just run:
docker run -d --name corescope \
--restart=unless-stopped \
-p 80:80 -p 1883:1883 \
-v /your/data:/app/data \
ghcr.io/kpa-clawbot/corescope:latest
Open http://localhost — done. No config file needed; CoreScope starts with sensible defaults.
For HTTPS with a custom domain, add -p 443:443 and mount your Caddyfile:
docker run -d --name corescope \
--restart=unless-stopped \
-p 80:80 -p 443:443 -p 1883:1883 \
-v /your/data:/app/data \
-v /your/Caddyfile:/etc/caddy/Caddyfile:ro \
-v /your/caddy-data:/data/caddy \
ghcr.io/kpa-clawbot/corescope:latest
Disable built-in services with -e DISABLE_MOSQUITTO=true or -e DISABLE_CADDY=true, or drop a .env file in your data volume. See docs/deployment.md for the full reference.
Build from Source
git clone https://github.com/Kpa-clawbot/CoreScope.git
cd CoreScope
./manage.sh setup
The setup wizard walks you through config, domain, HTTPS, build, and run.
./manage.sh status # Health check + packet/node counts
./manage.sh logs # Follow logs
./manage.sh backup # Backup database
./manage.sh update # Pull latest + rebuild + restart
./manage.sh mqtt-test # Check if observer data is flowing
./manage.sh help # All commands
Configure
Copy config.example.json to config.json and edit:
{
"port": 3000,
"mqtt": {
"broker": "mqtt://localhost:1883",
"topic": "meshcore/+/+/packets"
},
"mqttSources": [
{
"name": "remote-feed",
"broker": "mqtts://remote-broker:8883",
"topics": ["meshcore/+/+/packets"],
"username": "user",
"password": "pass",
"iataFilter": ["SJC", "SFO", "OAK"]
}
],
"channelKeys": {
"public": "8b3387e9c5cdea6ac9e5edbaa115cd72"
},
"defaultRegion": "SJC"
}
| Field | Description |
|---|---|
port |
HTTP server port (default: 3000) |
mqtt.broker |
Local MQTT broker URL ("" to disable) |
mqttSources |
External MQTT broker connections (optional) |
channelKeys |
Channel decryption keys (hex). Hashtag channels auto-derived via SHA256 |
defaultRegion |
Default IATA region code for the UI |
dbPath |
SQLite database path (default: data/meshcore.db) |
Environment Variables
| Variable | Description |
|---|---|
PORT |
Override config port |
DB_PATH |
Override SQLite database path |
Architecture
┌─────────────────────────────────────────────┐
│ Docker Container │
│ │
Observer → USB → │ Mosquitto ──→ Go Ingestor ──→ SQLite DB │
meshcoretomqtt → MQTT ──→│ │ │
│ Go HTTP Server ──→ WebSocket │
│ │ │ │
│ Caddy (HTTPS) ←───────┘ │
└────────────────────┼────────────────────────┘
│
Browser
Two-process model: The Go ingestor handles MQTT ingestion and packet decoding. The Go HTTP server loads all packets into an in-memory store on startup (5 indexes for fast lookups) and serves the REST API + WebSocket broadcast. Both are managed by supervisord inside a single container with Caddy for HTTPS and Mosquitto for local MQTT.
MQTT Setup
- Flash an observer node with
MESH_PACKET_LOGGING=1build flag - Connect via USB to a host running meshcoretomqtt
- Configure meshcoretomqtt with your IATA region code and MQTT broker address
- Packets appear on topic
meshcore/{IATA}/{PUBKEY}/packets
Or POST raw hex packets to POST /api/packets for manual injection.
Project Structure
corescope/
├── cmd/
│ ├── server/ # Go HTTP server + WebSocket + REST API
│ │ ├── main.go # Entry point
│ │ ├── routes.go # 40+ API endpoint handlers
│ │ ├── store.go # In-memory packet store (5 indexes)
│ │ ├── db.go # SQLite persistence layer
│ │ ├── decoder.go # MeshCore packet decoder
│ │ ├── websocket.go # WebSocket broadcast
│ │ └── *_test.go # 327 test functions
│ └── ingestor/ # Go MQTT ingestor
│ ├── main.go # MQTT subscription + packet processing
│ ├── decoder.go # Packet decoder (shared logic)
│ ├── db.go # SQLite write path
│ └── *_test.go # 53 test functions
├── proto/ # Protobuf API definitions
├── public/ # Vanilla JS frontend (no build step)
│ ├── index.html # SPA shell
│ ├── app.js # Router, WebSocket, utilities
│ ├── packets.js # Packet feed + hex breakdown
│ ├── map.js # Leaflet map + route visualization
│ ├── live.js # Live trace + VCR playback
│ ├── channels.js # Channel chat
│ ├── nodes.js # Node directory + detail views
│ ├── analytics.js # 11-tab analytics dashboard
│ └── style.css # CSS variable theming (light/dark)
├── docker/
│ ├── supervisord-go.conf # Process manager (server + ingestor)
│ ├── mosquitto.conf # MQTT broker config
│ ├── Caddyfile # Reverse proxy + HTTPS
│ └── entrypoint-go.sh # Container entrypoint
├── Dockerfile # Multi-stage Go build + Alpine runtime
├── config.example.json # Example configuration
├── test-*.js # Node.js test suite (frontend + legacy)
└── tools/ # Generators, E2E tests, utilities
For Developers
Test Suite
380 Go tests covering the backend, plus 150+ Node.js tests for the frontend and legacy logic, plus 49 Playwright E2E tests for browser validation.
# Go backend tests
cd cmd/server && go test ./... -v
cd cmd/ingestor && go test ./... -v
# Node.js frontend + integration tests
npm test
# Playwright E2E (requires running server on localhost:3000)
node test-e2e-playwright.js
Generate Test Data
node tools/generate-packets.js --api --count 200
Migrating from Node.js
If you're running an existing Node.js deployment, see docs/go-migration.md for a step-by-step guide. The Go engine reads the same SQLite database and config.json — no data migration needed.
Contributing
Contributions welcome. Please read AGENTS.md for coding conventions, testing requirements, and engineering principles before submitting a PR.
Live instance: analyzer.00id.net — all API endpoints are public, no auth required.
API Documentation: CoreScope auto-generates an OpenAPI 3.0 spec. Browse the interactive Swagger UI at /api/docs or fetch the machine-readable spec at /api/spec.
License
MIT