Python selenium connect to existing browser

How to connect selenium webdriver to existing firefox/chrome browser session?

Selenium WebDriver is a popular tool for automating browser interactions, and it supports many different browsers, including Firefox and Chrome. When using Selenium WebDriver, it typically launches a new instance of the browser for each test. However, there may be cases where it’s desirable to connect to an existing browser session instead, for example, to save time or to reuse an existing session with certain cookies or other state.

Method 1: Using RemoteWebDriver

To connect Selenium Webdriver to an existing Firefox/Chrome browser session using RemoteWebDriver, you can follow these steps:

Start the browser instance with a specific port number using the following command:

firefox --remote-debugging-port=9222

chrome --remote-debugging-port=9222

WebDriver driver = new RemoteWebDriver(new URL("http://localhost:9222"), DesiredCapabilities.chrome());

WebDriver driver = new RemoteWebDriver(new URL("http://localhost:9222"), DesiredCapabilities.firefox());

Here’s a complete example code for connecting to a Chrome browser instance:

import org.openqa.selenium.WebDriver; import org.openqa.selenium.remote.DesiredCapabilities; import org.openqa.selenium.remote.RemoteWebDriver; import java.net.URL; public class ChromeRemoteWebDriverExample  public static void main(String[] args) throws Exception  // Start the Chrome browser instance with a specific port number Runtime.getRuntime().exec("chrome --remote-debugging-port=9222"); // Create a RemoteWebDriver instance and connect to the Chrome browser instance WebDriver driver = new RemoteWebDriver(new URL("http://localhost:9222"), DesiredCapabilities.chrome()); // Navigate to a website driver.get("https://www.google.com"); // Print the page title System.out.println(driver.getTitle()); // Quit the browser driver.quit(); > >

And here’s a complete example code for connecting to a Firefox browser instance:

import org.openqa.selenium.WebDriver; import org.openqa.selenium.remote.DesiredCapabilities; import org.openqa.selenium.remote.RemoteWebDriver; import java.net.URL; public class FirefoxRemoteWebDriverExample  public static void main(String[] args) throws Exception  // Start the Firefox browser instance with a specific port number Runtime.getRuntime().exec("firefox --remote-debugging-port=9222"); // Create a RemoteWebDriver instance and connect to the Firefox browser instance WebDriver driver = new RemoteWebDriver(new URL("http://localhost:9222"), DesiredCapabilities.firefox()); // Navigate to a website driver.get("https://www.google.com"); // Print the page title System.out.println(driver.getTitle()); // Quit the browser driver.quit(); > >

Method 2: Using Existing Firefox Profile

If you want to connect Selenium Webdriver to an existing Firefox/Chrome browser session, you can use the «Using Existing Firefox Profile» method. This method allows you to use an existing Firefox/Chrome profile, which contains all the settings and preferences of your browser.

Here are the steps to connect Selenium Webdriver to an existing Firefox/Chrome browser session using an existing Firefox profile:

1. First, you need to create a Firefox profile. You can do this by opening Firefox and typing «about:profiles» in the address bar. This will open the «Firefox Profile Manager» page. From here, you can create a new profile or use an existing one.
2. Once you have a Firefox profile, you need to specify the path to the profile in your Selenium code. Here’s an example code for connecting to an existing Firefox profile:

from selenium import webdriver firefox_profile_path = "/path/to/firefox/profile" firefox_options = webdriver.FirefoxOptions() firefox_options.profile = firefox_profile_path driver = webdriver.Firefox(options=firefox_options)

1. If you want to connect to an existing Chrome profile, you can use a similar method. Here’s an example code for connecting to an existing Chrome profile:

from selenium import webdriver chrome_profile_path = "/path/to/chrome/profile" chrome_options = webdriver.ChromeOptions() chrome_options.add_argument("user-data-dir token operator">+ chrome_profile_path) driver = webdriver.Chrome(options=chrome_options)

That’s it! With these steps, you can connect Selenium Webdriver to an existing Firefox/Chrome browser session using an existing Firefox/Chrome profile.

Method 3: Using Browsermob-Proxy

Here are the steps to connect Selenium Webdriver to an existing Firefox/Chrome browser session using Browsermob-Proxy:

1. First, download and install Browsermob-Proxy on your machine.
2. Next, start the Browsermob-Proxy server using the following command:

browsermob-proxy --port 9090

from selenium import webdriver from browsermobproxy import Server server = Server("path/to/browsermob-proxy") server.start() proxy = server.create_proxy() # Set the proxy in Firefox/Chrome profile profile = webdriver.FirefoxProfile() profile.set_proxy(proxy.selenium_proxy()) # Connect to the existing Firefox/Chrome browser session driver = webdriver.Firefox(firefox_profile=profile) # Or driver = webdriver.Chrome(chrome_options=options) # Navigate to a website driver.get("https://www.google.com") # Close the browser and stop the proxy server driver.quit() server.stop()

# Navigate to Google driver.get("https://www.google.com") # Find the search box and enter the keyword search_box = driver.find_element_by_name("q") search_box.send_keys("browsermob-proxy") search_box.submit() # Wait for the search results to load driver.implicitly_wait(10) # Print the search results results = driver.find_elements_by_xpath("//div[@class='g']") for result in results: print(result.text)

That’s all! With these steps, you can easily connect Selenium Webdriver to an existing Firefox/Chrome browser session using Browsermob-Proxy.

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