Implementation:SeleniumHQ Selenium HasCdp

Knowledge Sources	SeleniumHQ_Selenium Selenium Documentation
Domains	WebDriver, Chromium_Browser
Last Updated	2026-02-12 00:00 GMT

Overview

HasCdp is a Java interface that enables executing raw Chrome DevTools Protocol (CDP) commands directly through a Chromium-based WebDriver instance.

Description

The HasCdp interface, annotated with @Beta, declares a single method executeCdpCommand(String commandName, Map<String, Object> parameters) that sends an arbitrary CDP command to the browser and returns the result as a name-value map. The command name and parameters should conform to the Chrome DevTools Protocol specification. The source explicitly notes that the higher-level org.openqa.selenium.devtools.DevTools API is strongly encouraged over this low-level interface.

Usage

Use HasCdp when you need to issue CDP commands that are not yet covered by the Selenium DevTools API, or when you need direct low-level access to specific protocol domains. Cast the driver to HasCdp to access the executeCdpCommand method.

Code Reference

Source Location

• Repository: SeleniumHQ_Selenium
• File: java/src/org/openqa/selenium/chromium/HasCdp.java

Signature

@Beta
public interface HasCdp {

    Map<String, Object> executeCdpCommand(String commandName, Map<String, Object> parameters);
}

Import

import org.openqa.selenium.chromium.HasCdp;

I/O Contract

Methods

Method	Parameters	Return Type	Description
executeCdpCommand(String, Map)	commandName -- the CDP command to execute (e.g., "Network.enable"); parameters -- a map of parameter names to values required by the command	Map<String, Object>	Executes the specified Chrome DevTools Protocol command and returns the result as a map of response field names to their values.

Input

Parameter	Type	Description
commandName	String	A fully qualified CDP command name following the "Domain.method" convention (e.g., "Page.navigate", "Network.emulateNetworkConditions").
parameters	Map<String, Object>	A map containing the parameters expected by the CDP command. May be an empty map if the command takes no parameters.

Output

Return Type	Description
Map<String, Object>	A map of response fields returned by the CDP command. The structure depends on the specific command invoked.

Usage Examples

ChromeDriver driver = new ChromeDriver();

// Cast the driver to HasCdp
HasCdp cdpDriver = (HasCdp) driver;

// Execute a CDP command to get the browser version
Map<String, Object> version = cdpDriver.executeCdpCommand(
    "Browser.getVersion", Map.of());
System.out.println("Browser: " + version.get("product"));
System.out.println("User Agent: " + version.get("userAgent"));

// Navigate using CDP directly
cdpDriver.executeCdpCommand("Page.navigate", Map.of(
    "url", "https://www.selenium.dev"
));

// Enable network tracking
cdpDriver.executeCdpCommand("Network.enable", Map.of());

// Set a cookie via CDP
cdpDriver.executeCdpCommand("Network.setCookie", Map.of(
    "name", "testCookie",
    "value", "testValue",
    "domain", "www.selenium.dev"
));

// Note: Prefer using org.openqa.selenium.devtools.DevTools API
// for type-safe, versioned CDP interaction when available.

driver.quit();

Related Pages

• SeleniumHQ_Selenium_HasCasting -- Interface for controlling Cast devices from Chromium browsers
• SeleniumHQ_Selenium_HasNetworkConditions -- Interface for simulating network conditions
• SeleniumHQ_Selenium_HasPermissions -- Interface for adjusting browser permissions
• SeleniumHQ_Selenium_HasLaunchApp -- Interface for launching Chromium apps
• Chrome DevTools Protocol Documentation
• Selenium Chrome Documentation