Struct dns_server_watcher::DnsServers

pub struct DnsServers { /* private fields */ }

The DNS servers learned from all sources.

Implementations

impl DnsServers

pub fn set_servers_from_source( &mut self, source: DnsServersUpdateSource, servers: Vec<DnsServer_> )

Sets the DNS servers discovered from source.

pub fn consolidated(&self) -> Vec<SocketAddress>

Returns a consolidated list of server addresses.

The servers will be returned deduplicated by their address and sorted by the source that each server was learned from. The servers will be sorted in most to least preferred order, with the most preferred server first. The preference of the servers is NDP, DHCPv4, DHCPv6 then Static, where NDP is the most preferred. No ordering is guaranteed across servers from different sources of the same source-kind, but ordering within a source is maintained.

Example, say we had servers SA1 and SA2 set for DHCPv6 interface A, and SB1 and SB2 for DHCPv6 interface B. The consolidated list will be either one of [SA1, SA2, SB1, SB2] or [SB1, SB2, SA1, SA2]. Notice how the ordering across sources (DHCPv6 interface A vs DHCPv6 interface B) is not fixed, but the ordering within the source ([SA1, SA2] for DHCPv6 interface A and [SB1, SB2] for DHCPv6 interface B) is maintained.

Note, if multiple DnsServer_s have the same address but different sources, only the DnsServer_ with the most preferred source will be present in the consolidated list of servers.

Trait Implementations

impl Default for DnsServers

fn default() -> DnsServers

Returns the “default value” for a type.