peerpigeon/docs/MIGRATION_COMPLETE.md

WebRTC-based peer-to-peer mesh networking library with intelligent routing and signaling server

# WebSocket Server Migration - Complete ✅

## Summary

Successfully migrated from the legacy `websocket-server/` directory to the new `server/` module with the enhanced `PeerPigeonServer` class.

## What Changed

### ✅ Removed
- **`websocket-server/server.js`** - Legacy standalone server (448 lines)
- **`websocket-server/`** directory

### ✅ New Files
- **`server/start.js`** - New standalone server script that uses `PeerPigeonServer`

### ✅ Updated Files

1. **`package.json`**
   - Changed `npm start` and `npm run server` to use `server/start.js`
   - Updated lint scripts to check `server/` instead of `websocket-server/`
   - Removed `websocket-server/` from published files

2. **Test Files**
   - `test/browser-integration-test.js`
   - `test/manual-video-test.js`
   - `test/manual-video-streaming-test.js`
   - `test/video-streaming-test.js`
   - All now spawn `server/start.js` instead of `websocket-server/server.js`

3. **Development Files**
   - `dev-runner.js` - Now uses `server/start.js`

4. **Documentation**
   - `examples/browser/minimal/README.md` - Updated server start command
   - `SELECTIVE_STREAMING_GUIDE.md` - Updated to use `npm run server`

## Benefits of New Server

The new `server/index.js` (`PeerPigeonServer` class) provides:

1. **Hub Support** - Can act as a hub with mesh networking capabilities
2. **Network Namespaces** - Isolate peers into different networks
3. **Bootstrap Connections** - Hubs can connect to other hubs
4. **Better API** - Event-driven architecture with EventEmitter
5. **Programmatic Usage** - Can be imported and used as a module
6. **Auto Port Selection** - Automatically tries next port if one is in use
7. **Better Cleanup** - More robust connection management
8. **Statistics API** - `getStats()` and `getHubStats()` methods

## Migration Commands

### Old Way
```bash
node websocket-server/server.js
```

### New Way
```bash
npm run server
# or
node server/start.js
# or programmatically
import { PeerPigeonServer } from './server/index.js';
const server = new PeerPigeonServer({ port: 3000 });
await server.start();
```

## Environment Variables

The new server supports:
- `PORT` - Server port (default: 3000)
- `HOST` - Server host (default: localhost)
- `MAX_CONNECTIONS` - Max connections (default: 1000)
- `CORS_ORIGIN` - CORS origin (default: *)

## Testing

Server was tested and verified working:
```bash
✅ Server starts successfully
✅ Health endpoint responds: /health
✅ Backwards compatible with all existing tests
```

## Next Steps

1. ✅ All npm scripts updated
2. ✅ All tests migrated
3. ✅ Documentation updated
4. ✅ Old code removed
5. 🎉 Migration complete!

The codebase is now cleaner with a single, more powerful server implementation.