dnsPromises.resolve(hostname[, rrtype])
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：
rrtype | records 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() |
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:
rrtype | records contains | Result type | Shorthand 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.
