Source: https://playwright.dev/java/docs/api/class-cdpsession

On this page

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

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

CDPSession client = page.context().newCDPSession(page);client.send("Runtime.enable");client.on("Animation.animationCreated", (event) -> System.out.println("Animation created!"));JsonObject response = client.send("Animation.getPlaybackRate");double playbackRate = response.get("playbackRate").getAsDouble();System.out.println("playback rate is " + playbackRate);JsonObject params = new JsonObject();params.addProperty("playbackRate", playbackRate / 2);client.send("Animation.setPlaybackRate", params);

Methods

Added before v1.9 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.

Usage

CDPSession.detach();

Returns

Added in: v1.37 cdpSession.off

Unregister an event handler for events with the specified event name. The given handler will not be called anymore for events with the given name.

Usage

CDPSession.off(eventName, handler);

Arguments

Added in: v1.37 cdpSession.on

Register an event handler for events with the specified event name. The given handler will be called for every event with the given name.

Usage

CDPSession.on(eventName, handler);

Arguments

Added before v1.9 cdpSession.send

Usage

CDPSession.send(method);CDPSession.send(method, args);

Arguments

Returns