Lethean Name Server — DNS for .lthn from ITNS sidechain
f917d3e994
28 tests covering: - parseAliasComment: Good/Bad/Ugly (v=lthn1 parsing, edge cases) - splitSemicolon: delimiter splitting - indexOf: character search - parseLTHNName: .lthn zone parsing, apex, rejection - arpaToIP: reverse DNS conversion - splitDot: IP octet splitting Co-Authored-By: Charon <charon@lethean.io> |
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| cmd/lns | ||
| docker-compose.yml | ||
| Dockerfile | ||
| go.mod | ||
| go.sum | ||
| lns | ||
| README.md | ||
LNS — Lethean Name Server
Serves .lthn DNS from the ITNS sidechain. Light mode — queries remote HSD RPC, discovers names from the main chain, serves DNS over UDP+TCP.
Built with dappco.re/go/core@v0.8.0-alpha.1.
Quick Start
# Docker (light mode — no chain sync needed)
docker compose up -d
# Or native
GOWORK=off go build -o lns ./cmd/lns
DAEMON_URL=http://127.0.0.1:46941 HSD_URL=http://127.0.0.1:14037 ./lns
Test
# DNS (UDP + TCP)
dig @localhost charon.lthn A
dig @localhost charon.lthn TXT
dig @localhost charon.lthn A +tcp
# HTTP API
curl http://localhost:5553/resolve?name=charon
curl http://localhost:5553/names
curl http://localhost:5553/health
Configuration
| Env var | Default | Description |
|---|---|---|
LNS_MODE |
light | light (remote HSD) |
DAEMON_URL |
http://127.0.0.1:46941 | Main chain RPC (for alias discovery) |
HSD_URL |
http://127.0.0.1:14037 | HSD sidechain RPC |
HSD_API_KEY |
testkey | HSD API key |
| `DNS_PORT | 53 | DNS server port (UDP + TCP) |
HTTP_PORT |
5553 | HTTP API port |
CHECK_INTERVAL |
15 | Tree root check seconds |
Discovery
On startup, LNS queries the main chain (get_all_alias_details) for registered aliases. Each alias becomes an HNS name to resolve on the sidechain. If an alias comment has hns=X.lthn, the HNS name is X (not the alias name). Falls back to a hardcoded list if the chain is unreachable.
Architecture
See code/core/go/blockchain/RFC.lns.md for the full spec (16 sections).
Main chain (aliases) → Discovery → HSD sidechain (records) → Cache → DNS + HTTP