# File lib/packet/packet_core.rb, line 165
      def cancel_write(t_sock)
        if !t_sock.closed?
          fileno = t_sock.fileno
          if UNIXSocket === t_sock
            internal_scheduled_write.delete(fileno)
          else
            write_scheduled.delete(fileno)
          end
        end
        write_ios.delete(t_sock)
      end