DnsClient — net.modules.dns | Standard libraries

Interface DnsClient

A DnsClient contains a list of DNS servers in the form of IP addresses in string form.

The client starts by using the first DNS server in the list.

If a DNS server fails to answer after 2.5 times the DNS-RETRY-TIMEOUT, then the client switches permanently to the next one on the list.

constructor servers/List

get name/any --record-types/List --network/Interface --timeout/Duration=DNS-DEFAULT-TIMEOUT -> List

Look up a domain name and return a list of results.

The record-types argument can be a set of RECORD-A, or RECORD-AAAA, in which case the result is a list of net.IpAddress.

If the record-types contains RECORD-TXT, RECORD-PTR, or RECORD-CNAME the results will be strings.

If the record-types contains RECORD-SRV, the results are instances of SrvResource (normally only used for mDNS).

get name/any --network/Interface --accept-ipv4/bool=true --accept-ipv6/bool=false --timeout/Duration=DNS-DEFAULT-TIMEOUT -> IpAddress

Look up a domain name and return an A or AAAA record.

If given a numeric address like "127.0.0.1" merely parses the numbers without a network round trip.