class Excon::Middleware::Idempotent

def error_call(datum)
  if datum[:idempotent] && [Excon::Errors::Timeout, Excon::Errors::SocketError,
      Excon::Errors::HTTPStatusError].any? {|ex| datum[:error].kind_of?(ex) } && datum[:retries_remaining] > 1
    # reduces remaining retries, reset connection, and restart request_call
    datum[:retries_remaining] -= 1
    datum[:connection].reset
    datum.delete(:error)
    datum[:connection].request(datum)
  else
    @stack.error_call(datum)
  end
end