CDPSession

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
});

Methods​

detach​

Added before v1.9

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

Usage

await cdpSession.detach();

Returns

• Promise<void>

send​

Added before v1.9

Usage

await cdpSession.send(method);
await cdpSession.send(method, params);

Arguments

• method string

  Protocol method name.

• params Object (optional)

  Optional method parameters.

Returns

• Promise<Object>