---
title: Sound Transport Relay
emoji: "🔊"
colorFrom: blue
colorTo: green
sdk: docker
app_port: 7860
pinned: false
---

# Sound Transport Relay (HF)

This Space runs a simple WebSocket relay at `/ws`. Clients should connect with:

```json
{"role":"sender","code":"123456789"}
```

or

```json
{"role":"receiver","code":"123456789"}
```

After both sides connect with the same code, the relay forwards all text/binary
messages both directions.

Notes
- HF free Spaces can sleep when idle; the first connection after sleep will have
  a cold-start delay.
- This relay does not authenticate or validate passwords. Your app should handle
  authentication and encryption end-to-end.