# File lib/selenium/server.rb, line 50
    def self.download(required_version)
      required_version = latest if required_version == :latest
      download_file_name = "selenium-server-standalone-#{required_version}.jar"

      if File.exists? download_file_name
        return download_file_name
      end

      begin
        open(download_file_name, "wb") do |destination|
          net_http.start("selenium.googlecode.com") do |http|
            resp = http.request_get("/files/#{download_file_name}") do |response|
              total = response.content_length
              progress = 0
              segment_count = 0

              response.read_body do |segment|
                progress += segment.length
                segment_count += 1

                if segment_count % 15 == 0
                  percent = (progress.to_f / total.to_f) * 100
                  print "#{CL_RESET}Downloading #{download_file_name}: #{percent.to_i}% (#{progress} / #{total})"
                  segment_count = 0
                end

                destination.write(segment)
              end
            end

            unless resp.kind_of? Net::HTTPSuccess
              raise Error, "#{resp.code} for #{download_file_name}"
            end
          end
        end
      rescue
        FileUtils.rm download_file_name if File.exists? download_file_name
        raise
      end

      download_file_name
    end