[Home](./index.md) > [puppeteer](./puppeteer.md) > [CDPSession](./puppeteer.cdpsession.md) ## CDPSession class Signature: ```typescript export declare class CDPSession extends EventEmitter ``` ## Constructors | Constructor | Modifiers | Description | | --- | --- | --- | | [(constructor)(connection, targetType, sessionId)](./puppeteer.cdpsession._constructor_.md) | | Constructs a new instance of the CDPSession class | ## Properties | Property | Modifiers | Type | Description | | --- | --- | --- | --- | | [\_callbacks](./puppeteer.cdpsession._callbacks.md) | | Map<number, ConnectionCallback> | | | [\_connection](./puppeteer.cdpsession._connection.md) | | [Connection](./puppeteer.connection.md) | | | [\_sessionId](./puppeteer.cdpsession._sessionid.md) | | string | | | [\_targetType](./puppeteer.cdpsession._targettype.md) | | string | | ## Methods | Method | Modifiers | Description | | --- | --- | --- | | [\_onClosed()](./puppeteer.cdpsession._onclosed.md) | | | | [\_onMessage(object)](./puppeteer.cdpsession._onmessage.md) | | | | [detach()](./puppeteer.cdpsession.detach.md) | | | | [send(method, params)](./puppeteer.cdpsession.send.md) | | |