Struct DnsResolver 

pub struct DnsResolver { /* private fields */ }

A DNS-backed resolver with a TTL-respecting cache.

Implementations

impl DnsResolver

pub fn from_system() -> Result<Self>

A resolver using the system’s configured nameservers.

pub fn with_config( config: ResolverConfig, options: ResolverOpts, ) -> Result<Self>

A resolver pointed at specific nameservers.

This is what makes the tests possible: they run a fixture DNS server on localhost and point sipx at it, rather than asking the public internet and hoping.

pub fn for_nameserver(server: SocketAddr, timeout: Duration) -> Result<Self>

A resolver pointed at one nameserver.

Wraps the DNS client’s own configuration types so they appear in exactly one place. They change shape between releases — this file has been through one such change already — and a caller of sipx should not have to track that to point a resolver somewhere.

pub fn with_max_ttl(self, max_ttl: Duration) -> Self

Cap how long any record is held, however long its TTL claims.

pub async fn naptr(&self, domain: &str) -> Answer<Naptr>

NAPTR records for a domain.

pub async fn srv(&self, name: &str) -> Answer<Srv>

SRV records for a name.

pub async fn addresses(&self, host: &str) -> Answer<IpAddr>

Addresses for a host.

Both families, because RFC 3263 does not distinguish them and a host with only an AAAA record is reachable.

Trait Implementations

impl Debug for DnsResolver

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.