can’t execute rsDriver (connection refused)

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Note: this answer is meant for Windows

When trying to run the deprecated checkForServer() Selenium offers two options:

  • use rsDriver
  • use Docker

see:

RSelenium::checkForServer()
# Error: checkForServer is now defunct. Users in future can find the function in 
# file.path(find.package("RSelenium"), "examples/serverUtils"). The
# recommended way to run a selenium server is via Docker. Alternatively
# see the RSelenium::rsDriver function.

Everybody seems to have issues with rsDriver and Docker is the recommended option so we’ll go this route:

  • install docker
  • run it, restart computer as requested
  • pull image by running in command line: docker pull selenium/standalone-firefox(or chrome instead of firefox) or in R shell('docker pull selenium/standalone-firefox')
  • start server by running in command line: docker run -d -p 4445:4444 selenium/standalone-firefox or in R shell('docker run -d -p 4445:4444 selenium/standalone-firefox')
  • Then run remDr <- remoteDriver(remoteServerAddr = "localhost", port = 4445L, browserName = "firefox'") . The doc suggests something different with a virtual machine but i couldn’t get it to work.

With this I was set, here is my code:

shell('docker run -d -p 4445:4444 selenium/standalone-firefox')
remDr <- remoteDriver(remoteServerAddr = "localhost", port = 4445L, browserName = "firefox")
remDr$open()
remDr$navigate("http://www.google.com/ncr")
remDr$getTitle()
# [[1]]
# [1] "Google"

The doc for more info:

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