close

# File actioncable/lib/action_cable/connection/client_socket.rb, line 88
      def close(code = nil, reason = nil)
        code   ||= 1000
        reason ||= ''

        unless code == 1000 or (code >= 3000 and code <= 4999)
          raise ArgumentError, "Failed to execute 'close' on WebSocket: " +
                               "The code must be either 1000, or between 3000 and 4999. " +
                               "#{code} is neither."
        end

        @ready_state = CLOSING unless @ready_state == CLOSED
        @driver.close(reason, code)
      end