39 lines
1.0 KiB
Markdown
39 lines
1.0 KiB
Markdown
# ADR-0006: Private world transport via HyperDHT TCP tunnel
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- **Status:** Accepted
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- **Date:** 2026-07-30
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## Context
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Guests must reach a host Squid without public port forwards. Holesail implements this pattern but is **AGPL-3.0**. Re-encoding the full Minecraft protocol over Protomux is version-fragile.
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## Decision
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Implement an **in-house Apache-2.0 HyperDHT byte pipe**:
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- Host: `dht.createServer` + pipe each connection to `127.0.0.1:squidPort`
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- Guest: local loopback accept + `dht.connect(worldKey)` + pipe
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- Opaque TCP bytes (no MC packet parse on the tunnel)
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Do **not** hard-depend on `holesail`.
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Optional: capability proof on stream open (`hyperswarm-capability`).
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## Consequences
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### Positive
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- Works for any Squid-supported protocol version
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- License-safe
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- Matches peardock “data plane” concept without AGPL
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### Negative / tradeoffs
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- One pipe per client connection (resource management needed)
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- Latency = P2P RTT (not LAN)
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### Follow-ups
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- [ ] Phase 2 `lib/world-tunnel`
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- [ ] Concurrency limits and backpressure
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