Question

What is a Session Id in Selenium Webdriver?

Answer 1

Hey Uruj, in Selenium Webdriver Session ID is a unique number that is assigned to your web driver by server . Webdriver uses this session Id to interact with browser launched by them. So a browser window  (eg Chrome) launched by a specific driver (chrome driver) will have a unique sessionId. Thus commands given by you in your automation script will only be sent to the browser launched by your driver using Session Id. To get your driver session ID you can use:

WebDriver driver = new FirefoxDriver();

SessionId session = ((FirefoxDriver)driver).getSessionId();

System.out.println("Session id: " + session.toString());