Selenium: Invalid “already running” error when starting server

Question

I am trying to get the Selenium server up and running. However, when I type:

java -jar selenium-server-standalone-2.0b3.jar

I get an Exception

Answer 1

To shut down the server you can use: http://localhost:4444/selenium-server/driver/?cmd=shutDownSeleniumServer

It will give message OKOK , means it got shutdown. If the server is not running then it will show "This web page not available"

To check the selenium server status , use this http://localhost:4444/selenium-server/driver/?cmd=getLogMessages

It will give OK if server is running , if not running then it will show webpage not available