# OpenSpec Change: enterprise-server-network-libp2p-server

- **Change ID**: enterprise-server-network-libp2p-server
- **Package**: `@suaveplan/network-libp2p-server`
- **Category**: server/network
- **Target path**: `server/network/network-libp2p-server`
- **Status**: SUPERSEDED-BY-GENESIS-WAVE
- **Date**: 2026-04-24
- **Reference spec**: `/mnt/s/web/suaveplan/enterprise/network-libp2p-server.md`

---

## Summary

Deliver `@suaveplan/network-libp2p-server` on the genesis branch from scratch at enterprise quality. The package provides a server-side libp2p node with TCP + WebSocket transports, noise encryption, yamux stream multiplexing, Kad-DHT peer discovery, GossipSub pub/sub, and a typed `Libp2pServerAdapter` facade. It exposes `start` / `stop`, `subscribe` / `publish` for topic-based messaging, `dialPeer`, and `peers` queries. Genesis adds Zod-validated options, `@suaveplan/error` codes, OTel spans/counters, retry on dial failures, and full integration tests using two in-process nodes.

---

## Current-state audit (genesis)

Does not exist on genesis — fresh build.

---

## Available workspace deps on genesis

| Package | Role |
|---|---|
| `@suaveplan/error` (`workspace:^`) | Typed `NETWORK_LIBP2P.*` error codes |
| `@suaveplan/types` (`workspace:^`) | `LoggerLike` |
| `@suaveplan/events` (`workspace:^`) | Internal event routing |
| `@suaveplan/retry` (`workspace:^`) | Dial retry |
| `@suaveplan/logger` (`workspace:^`) | Structured logs |
| `zod` (`catalog:forms`) | Options validation |
| `@opentelemetry/api` (`catalog:observability`) | Spans + gauges |
| `libp2p` (`catalog:network`) | Core libp2p |
| `@libp2p/tcp` / `@libp2p/websockets` / `@chainsafe/libp2p-noise` / `@chainsafe/libp2p-yamux` / `@libp2p/kad-dht` / `@chainsafe/libp2p-gossipsub` (all `catalog:network`) | Transport + protocol stack |
| `tslib` (`catalog:build`) | Runtime helpers |

---

## Public API surface

```ts
class Libp2pServerAdapter {
  constructor(options: Libp2pServerOptions)
  start(): Promise<void>
  stop(): Promise<void>
  peerId(): string
  multiaddrs(): string[]
  peers(): string[]
  dialPeer(multiaddr: string): Promise<void>
  subscribe(topic: string, handler: (from: string, data: Uint8Array) => void): () => void
  publish(topic: string, data: Uint8Array): Promise<void>
  isStarted(): boolean
}

function createLibp2pServerAdapter(options: Libp2pServerOptions): Libp2pServerAdapter

interface Libp2pServerOptions {
  listenAddresses?: string[]       // default: ['/ip4/0.0.0.0/tcp/0']
  bootstrapPeers?: string[]
  dhtEnabled?: boolean             // default: true
  gossipEnabled?: boolean          // default: true
  logger?: LoggerLike
}

const Libp2pServerOptionsSchema: z.ZodSchema<Libp2pServerOptions>

type Libp2pErrorCode =
  | 'NETWORK_LIBP2P_START_FAILED'
  | 'NETWORK_LIBP2P_DIAL_FAILED'
  | 'NETWORK_LIBP2P_PUBLISH_FAILED'
  | 'NETWORK_LIBP2P_STOP_FAILED'

function registerLibp2pErrorCodes(): void
```

---

## File layout

```text
server/network/network-libp2p-server/
  package.json
  tsconfig.json
  vitest.config.ts
  src/
    index.ts
    error-codes.ts
    constants/index.ts
    types/
      libp2p-server.types.ts
      libp2p-server.types.md
    adapter/
      libp2p-server-adapter/
        libp2p-server-adapter.ts
        libp2p-server-adapter.md
        libp2p-server-adapter.types.ts
        libp2p-server-adapter.test.ts
        index.ts
  tests/
    integration.test.ts
```

---

## Impact

Downstream: platform network mesh features. Server-only — Node.js required.

**Prerequisites on Verdaccio**: `@suaveplan/error`, `@suaveplan/types`, `@suaveplan/events`, `@suaveplan/retry`, `@suaveplan/logger`.