dnsPromises.resolveSoa(hostname)

新增于: v10.6.0

使用域名系统协议来解析 hostname 的起始规范记录（SOA 记录）。当成功时，Promise 使用具有以下属性的对象进行解决：

¥Uses the DNS protocol to resolve a start of authority record (SOA record) for the hostname. On success, the Promise is resolved with an object with the following properties:

  • nsname

  • hostmaster

  • serial

  • refresh

  • retry

  • expire

  • minttl

{
  nsname: 'ns.example.com',
  hostmaster: 'root.example.com',
  serial: 2013101809,
  refresh: 10000,
  retry: 2400,
  expire: 604800,
  minttl: 3600
}