dnsPromises.resolve(hostname[, rrtype])


  • hostname <string> 要解析的主机名。
  • rrtype <string> 资源记录类型。 默认值: 'A'

使用域名系统协议将主机名(例如 'nodejs.org')解析为资源记录数组。 当成功时,Promise 使用资源记录数组解决。 个别结果的类型和结构因 rrtype 而异:

rrtyperecords 包含结果的类型快捷方法
'A'IPv4 地址(默认)<string>dnsPromises.resolve4()
'AAAA'IPv6 地址<string>dnsPromises.resolve6()
'ANY'任何记录<Object>dnsPromises.resolveAny()
'CNAME'规范名称记录<string>dnsPromises.resolveCname()
'MX'邮件交换记录<Object>dnsPromises.resolveMx()
'NAPTR'名称授权指针记录<Object>dnsPromises.resolveNaptr()
'NS'名称服务器记录<string>dnsPromises.resolveNs()
'PTR'指针记录<string>dnsPromises.resolvePtr()
'SOA'起始规范记录<Object>dnsPromises.resolveSoa()
'SRV'服务记录<Object>dnsPromises.resolveSrv()
'TXT'文本记录<string[]>dnsPromises.resolveTxt()

当出错时,Promise 使用 Error 对象拒绝,其中 err.codeDNS 错误码 之一。

  • hostname <string> Host name to resolve.
  • rrtype <string> Resource record type. Default: 'A'.

Uses the DNS protocol to resolve a host name (e.g. 'nodejs.org') into an array of the resource records. When successful, the Promise is resolved with an array of resource records. The type and structure of individual results vary based on rrtype:

rrtyperecords containsResult typeShorthand method
'A'IPv4 addresses (default)<string>dnsPromises.resolve4()
'AAAA'IPv6 addresses<string>dnsPromises.resolve6()
'ANY'any records<Object>dnsPromises.resolveAny()
'CNAME'canonical name records<string>dnsPromises.resolveCname()
'MX'mail exchange records<Object>dnsPromises.resolveMx()
'NAPTR'name authority pointer records<Object>dnsPromises.resolveNaptr()
'NS'name server records<string>dnsPromises.resolveNs()
'PTR'pointer records<string>dnsPromises.resolvePtr()
'SOA'start of authority records<Object>dnsPromises.resolveSoa()
'SRV'service records<Object>dnsPromises.resolveSrv()
'TXT'text records<string[]>dnsPromises.resolveTxt()

On error, the Promise is rejected with an Error object, where err.code is one of the DNS error codes.