dnsPromises.resolveTxt(hostname)
hostname<string>
使用域名系统协议为 hostname 解析文本查询（TXT 记录）。
当成功时，Promise 使用可用于 hostname（例如 [ ['v=spf1 ip4:0.0.0.0 ', '~all' ] ]）的文本记录的二维数组进行解决。
每个子数组包含一条记录的 TXT 块。
根据用例，这些可以连接在一起或单独处理。
hostname<string>
Uses the DNS protocol to resolve text queries (TXT records) for the
hostname. On success, the Promise is resolved with a two-dimensional array
of the text records available for hostname (e.g.
[ ['v=spf1 ip4:0.0.0.0 ', '~all' ] ]). Each sub-array contains TXT chunks of
one record. Depending on the use case, these could be either joined together or
treated separately.