# File lib/twitter/json_stream.rb, line 257
    def parse_response_line ln
      if ln =~ /\AHTTP\/1\.[01] ([\d]{3})/
        @code = $1.to_i
        @state = :headers
        receive_error("invalid status code: #{@code}. #{ln}") unless @code == 200
      else
        receive_error('invalid response')
        close_connection
      end
    end