class Selenium::WebDriver::Remote::Http::Curb

def request(verb, url, headers, payload)
  client.url = url.to_s
  # workaround for http://github.com/taf2/curb/issues/issue/40
  # curb will handle this for us anyway
  headers.delete 'Content-Length'
  client.headers = headers
  # http://github.com/taf2/curb/issues/issue/33
  client.head = false
  client.delete = false
  case verb
  when :get
    client.http_get
  when :post
    client.post_body = payload || ''
    client.http_post
  when :put
    client.put_data = payload || ''
    client.http_put
  when :delete
    client.http_delete
  when :head
    client.http_head
  else
    raise Error::WebDriverError, "unknown HTTP verb: #{verb.inspect}"
  end
  create_response client.response_code, client.body_str, client.content_type
end