[Home](./index.md) > [puppeteer](./puppeteer.md) > [Connection](./puppeteer.connection.md) > [session](./puppeteer.connection.session.md)
## Connection.session() method
Signature:
```typescript
session(sessionId: string): CDPSession | null;
```
## Parameters
| Parameter | Type | Description |
| --- | --- | --- |
| sessionId | string | {?CDPSession} |
Returns:
[CDPSession](./puppeteer.cdpsession.md) \| null