# Tutorial: Simple P2P Chat w/ Hypercore

## Step-by-Step

1. **Cores**:

```js
const corestore = Corestore('./chat')
const messages = corestore.get('messages')
```

1. **Swarm**:

```js
swarm.join(messages.discoveryKey)
swarm.on('connection', c => messages.replicate(c))
```

1. **Send/Recv**:

```js
await messages.append(JSON.stringify({from: me, text}))
for await (const block of messages.createReadStream({live:true})) {
  const msg = JSON.parse(block)
  display(msg)
}
```

1. **Run**: npm i hypercore hyperswarm corestore; node chat.js [topic]

**Extend**: Corestore namespaces (users/rooms), hyperdrive attachments.