# Référence Rapide - sdk_relay

## Endpoints clés

- WS: `ws://host:8090`
- HTTP: `http://host:8091`
- Health: `GET /health`
- Métriques: `GET /metrics`

## Messages WS

- handshake → handshake_response
- ping → pong
- subscribe/unsubscribe
- notifications: payment_detected, block_mined

## Sync

- Types: StateSync, HealthSync, MetricsSync
- Forcer: `POST /sync/force`

## Logs

- Niveau: `RUST_LOG=debug`
- Fichiers: selon l’outil de lancement

## Dépannage rapide

- Ports 8090/8091 ouverts
- Bitcoin Core RPC OK
- Blindbit HTTP OK