RSelenium: server signals port is already in use

Question

I\'m using the following code in RSelenium to open a browser. After I close the browser, or even close the handler by running remDr$close(), the port is still in use. I have

Answer 1

The command:

system("taskkill /im java.exe /f", intern=FALSE, ignore.stdout=FALSE)

will free all the ports.

If you want to free a particular port, you can do this:

#get the PID of the process you launched

pid <- driver$server$process$get_pid()

#pasting this PID in the following command (will kill all the child processes as well, closes the browser as well)

system(paste0("Taskkill /F /T" ," /PID ", pid))