## Summary `transmissions.scope_name` (#899) reached the database but never reached the UI. Two problems, one dead feature and one missing surface. ## 1. The detail pane's Scope row was dead `public/packets.js:3279` has rendered a **Scope** row since #899, gated on `pkt.scope_name != null`. It never fires in practice. `/api/packets` and `/api/packets/{id}` are served from the in-memory `PacketStore`. The store reads `scope_name` out of SQLite fine (`store.go:888`, `chunked_load.go:551` → `StoreTx.ScopeName`), but `txToMap()` did not put it in the JSON. Only packets old enough to have been evicted from the store — and thus served by the SQLite fallback in `db.go`, which does emit it — could ever show a scope. Verified against a live instance before the fix: ``` GET /api/packets/552e9687f1525537 → packet keys: ['_parsedPath','decoded_json','direction','first_seen','hash','id', 'observation_count','observations','observer_iata','observer_id', 'observer_name','path_json','payload_type','raw_hex','route_type','rssi','snr','timestamp'] ``` No `scope_name`. ### The NULL / "" distinction `StoreTx.ScopeName` was typed `string`, which collapses the two states the frontend distinguishes: | DB value | Meaning | UI | |---|---|---| | `NULL` | not transport-scoped | row hidden | | `""` | transport-scoped, region matched no configured key | muted "unknown scope" | | `"#be"` | matched region | the region name | `route_type` is **not** a usable proxy for that distinction: the ingestor writes NULL for a transport route whose `transport_code_1` is `0000` (`cmd/ingestor/db.go:1576` — `IsTransportScoped = route_type IN (0,3) AND Code1 ≠ "0000"`). So the field is now `*string`, with `nullStrPtr` preserving what `nullStrVal` collapsed. The two internal consumers (`TransportedScopes` #1751, `relayEntry.scope`) only care about non-empty named scopes and are unchanged in behaviour. ## 2. New: a Scope column on the packets table The scope was only reachable one packet at a time by opening the detail pane. It now has its own sortable column between Type and Observer, visible by default. The default view is **Group by Hash**, served by mappers that did not carry `scope_name` at all — so the column would have been empty in exactly the view most people look at. Both grouped paths now select and emit it: `groupedTxsToPage` in the store, and the dedicated grouped query in the DB fallback (v3 and legacy shapes). Rendering lives in `scopeCellHtml` (`public/app.js`, next to `transportBadge`) and is used on all three row-render sites — group header, expanded children, flat rows — so the column and the detail pane cannot drift apart. **Sorting** pins the empties last in both directions, as the nodes table already does for `default_scope`. Only ~8% of packets carry a scope, so an ascending sort would otherwise bury every scoped row under a wall of dashes. **Filtering**: `packet-filter.js` gains a `scope` field, so the cell is click-to-filter like Type and Observer, and `scope == "#be"` works in the filter bar. **Column prefs**: a `packets-known-cols` companion key. The `packets-visible-cols` array alone cannot distinguish "this column did not exist when you saved" from "you unchecked it", so any new column arrives silently hidden for every returning visitor. Keys absent from `known-cols` get the default treatment; keys the visitor actually hid stay hidden — there is a test for that second half specifically. ## Tests Each watched fail first. **Go** (`cmd/server/packet_scope_name_test.go`) - `txToMap` unit tests for all three states, including a JSON round-trip so a typed nil `*string` cannot pass as `null` - end-to-end through `/api/packets/{hash}` - `groupedTxsToPage` unit + end-to-end through `/api/packets?groupByHash=true`, across **both** the store-backed and DB-fallback paths - `transported_scopes_1751_test.go`: the "no scope" guard now covers both non-values (nil and a pointer to `""`) **Frontend** - `test-frontend-helpers.js`: `scopeCellHtml` three states + escaping - `test-packet-filter.js`: `scope` matching, case-insensitivity, and `FIELDS` registration - `test-packets-scope-column.js` (new Playwright e2e): header position, default visibility, one cell per row, em dash on non-transport rows, empties-last sorting, the Columns toggle, and the prefs backfill ## Verification Deployed and checked against a live instance: ``` /api/packets?groupByHash=true&limit=500 → scope_name present on 500/500, 59 with a matched region, 1 unknown-scope test-packets-scope-column.js → 7 passed, 0 failed cd cmd/server && go test ./... → ok ``` Two pre-existing failures, unrelated and equally red on an unmodified checkout: `test-e2e-playwright.js` "Customizer open does not overwrite server home config" and `test-observer-iata-1188-e2e.js` (timeout on `[data-loaded="true"]`). 🤖 Generated with [Claude Code](https://claude.com/claude-code) --------- Co-authored-by: Claude Opus 5 (1M context) <noreply@anthropic.com>
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 |
| GOMEMLIMIT (memory-constrained hosts) | set to ≥1.5× working set (e.g. 1536 MiB on a 2 GB Pi for a ~1 GB store). Lower values trigger a GC death-spiral. Configure via the GOMEMLIMIT env var or runtime.maxMemoryMB in config.json; env wins. Applies to both server and ingestor. See #1010. |
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
GPL-3.0-or-later




