CDPSession

• extends: EventEmitter

The CDPSession instances are used to talk raw Chrome Devtools Protocol:

• protocol methods can be called with session.send method.
• protocol events can be subscribed to with session.on method.

Useful links:

• Documentation on DevTools Protocol can be found here: DevTools Protocol Viewer.
• Getting Started with DevTools Protocol: https://github.com/aslushnikov/getting-started-with-cdp/blob/master/README.md

const client = await page.context().newCDPSession(page);

await client.send('Animation.enable');

client.on('Animation.animationCreated', () => console.log('Animation created!'));

const response = await client.send('Animation.getPlaybackRate');

console.log('playback rate is ' + response.playbackRate);

await client.send('Animation.setPlaybackRate', {

playbackRate: response.playbackRate / 2

});

• cdpSession.detach()
• cdpSession.send(method[, params])

cdpSession.detach()

Detaches the CDPSession from the target. Once detached, the CDPSession object won't emit any events and can't be used to send messages.

cdpSession.send(method[, params])

• method <string> protocol method name
• params <Object> Optional method parameters
• returns: <Promise<Object>>