class Selenium::Server

def net_http_start(address, &block)
  http_proxy = ENV.fetch('http_proxy', nil) || ENV.fetch('HTTP_PROXY', nil)
  if http_proxy
    http_proxy = "http://#{http_proxy}" unless http_proxy.start_with?('http://')
    uri = URI.parse(http_proxy)
    Net::HTTP.start(address, nil, uri.host, uri.port, &block)
  else
    Net::HTTP.start(address, use_ssl: true, &block)
  end
end