130 lines
5.7 KiB
Markdown
130 lines
5.7 KiB
Markdown
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# Session Brief: core/go-p2p
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**Repo**: `forge.lthn.ai/core/go-p2p` (clone at `/tmp/core-go-p2p`)
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**Module**: `forge.lthn.ai/core/go-p2p`
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**Status**: 16 Go files, ~2,500 LOC, node tests PASS (42% coverage), ueps has NO TESTS
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**Wiki**: https://forge.lthn.ai/core/go-p2p/wiki (6 pages)
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## What This Is
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P2P networking layer for the Lethean network. Three packages:
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### node/ — P2P Mesh (14 files)
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- **Identity**: Ed25519 keypair generation, PEM serialisation, challenge-response auth
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- **Transport**: Encrypted WebSocket connections via gorilla/websocket + Borg (encrypted blob storage)
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- **Peers**: Registry with scoring, persistence, auth modes (open/allowlist), name validation
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- **Messages**: Typed protocol messages (handshake, ping, stats, miner control, deploy, logs)
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- **Protocol**: Response handler with validation and typed parsing
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- **Worker**: Command handler (ping, stats, miner start/stop, deploy profiles, get logs)
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- **Dispatcher**: UEPS packet routing skeleton with threat circuit breaker
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- **Controller**: Remote node operations (connect, command, disconnect)
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- **Bundle**: Service factory for Core framework DI registration
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### ueps/ — Wire Protocol (2 files, NO TESTS)
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- **PacketBuilder**: Constructs signed UEPS frames with TLV encoding
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- **ReadAndVerify**: Parses and verifies HMAC-SHA256 integrity
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- TLV tags: 0x01-0x05 (header fields), 0x06 (HMAC), 0xFF (payload marker)
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- Header: Version, CurrentLayer, TargetLayer, IntentID, ThreatScore
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### logging/ — Structured Logger (1 file)
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- Simple levelled logger (INFO/WARN/ERROR/DEBUG) with key-value pairs
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## Current State
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| Area | Status |
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|------|--------|
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| node/ tests | PASS — 42% statement coverage |
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| ueps/ tests | NONE — zero test files |
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| logging/ tests | NONE |
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| go vet | Clean |
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| TODOs/FIXMEs | None found |
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| Identity (Ed25519) | Well tested — keypair, challenge-response, deterministic sigs |
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| PeerRegistry | Well tested — add/remove, scoring, persistence, auth modes, name validation |
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| Messages | Well tested — all 15 message types, serialisation, error codes |
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| Worker | Well tested — ping, stats, miner, deploy, logs handlers |
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| Transport | NOT tested — WebSocket + Borg encryption |
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| Controller | NOT tested — remote node operations |
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| Dispatcher | NOT tested — UEPS routing skeleton |
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## Dependencies
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- `github.com/Snider/Borg` v0.2.0 (encrypted blob storage)
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- `github.com/Snider/Enchantrix` v0.0.2 (secure environment)
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- `github.com/Snider/Poindexter` (secure pointer)
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- `github.com/gorilla/websocket` v1.5.3
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- `github.com/google/uuid` v1.6.0
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- `github.com/ProtonMail/go-crypto` v1.3.0
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- `github.com/adrg/xdg` v0.5.3
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- `github.com/stretchr/testify` v1.11.1
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- `golang.org/x/crypto` v0.45.0
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## Priority Work
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### High (coverage gaps)
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1. **UEPS tests** — Zero tests for the wire protocol. This is the consent-gated TLV protocol from RFC-021. Need: builder round-trip, HMAC verification, malformed packet rejection, boundary conditions (max ThreatScore, empty payload, oversized payload).
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2. **Transport tests** — WebSocket connection, Borg encryption handshake, reconnection logic.
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3. **Controller tests** — Connect/command/disconnect flow.
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4. **Dispatcher tests** — UEPS routing, threat circuit breaker (ThreatScore > 50000 drops).
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### Medium (hardening)
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5. **Increase node/ coverage** from 42% to 70%+ — focus on transport.go, controller.go, dispatcher.go
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6. **Benchmarks** — Peer scoring, UEPS marshal/unmarshal, identity key generation
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7. **Integration test** — Full node-to-node handshake over localhost WebSocket
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### Low (completeness)
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8. **Logging tests** — Simple but should have coverage
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9. **Peer discovery** — Currently manual. Add mDNS or DHT discovery
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10. **Connection pooling** — Transport creates fresh connections; add pool for controller
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## File Map
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```
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/tmp/core-go-p2p/
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├── node/
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│ ├── bundle.go + bundle_test.go — Core DI factory
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│ ├── identity.go + identity_test.go — Ed25519 keypair, PEM, challenge-response
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│ ├── message.go + message_test.go — Protocol message types
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│ ├── peer.go + peer_test.go — Registry, scoring, auth
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│ ├── protocol.go + protocol_test.go — Response validation, typed parsing
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│ ├── worker.go + worker_test.go — Command handlers
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│ ├── transport.go (NO TEST) — WebSocket + Borg encryption
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│ ├── controller.go (NO TEST) — Remote node operations
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│ ├── dispatcher.go (NO TEST) — UEPS routing skeleton
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│ └── logging.go — Package-level logger setup
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├── ueps/
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│ ├── ueps.go (NO TEST) — PacketBuilder, ReadAndVerify, TLV
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│ └── types.go (NO TEST) — UEPSHeader, ParsedPacket, intent IDs
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├── logging/
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│ └── logger.go (NO TEST) — Levelled structured logger
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├── go.mod
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└── go.sum
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```
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## Key Interfaces
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```go
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// node/message.go — 15 message types
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const (
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MsgHandshake MsgHandshakeAck MsgPing MsgPong
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MsgDisconnect MsgGetStats MsgStats MsgStartMiner
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MsgStopMiner MsgMinerAck MsgDeploy MsgDeployAck
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MsgGetLogs MsgLogs MsgError
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)
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// ueps/types.go — UEPS header
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type UEPSHeader struct {
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Version uint8 // 0x09
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CurrentLayer uint8
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TargetLayer uint8
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IntentID uint8 // 0x01=Handshake, 0x20=Compute, 0x30=Rehab, 0xFF=Extended
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ThreatScore uint16
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}
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```
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## Conventions
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- UK English
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- Tests: testify assert/require
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- Licence: EUPL-1.2
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- Lethean codenames: Borg (Secure/Blob), Poindexter (Secure/Pointer), Enchantrix (Secure/Environment)
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