Struct OptRecord 

pub struct OptRecord<'a>(/* private fields */);

Typed view of an OPT (EDNS0) record.

OPT records repurpose the class and TTL fields for EDNS metadata; the generic DnsRr::dns_class and DnsRr::ttl still return those raw values, but the typed accessors below interpret them per RFC 6891.

Implementations

impl<'a> OptRecord<'a>

pub fn as_dns_rr(self) -> &'a DnsRr

Returns the underlying generic DnsRr.

Useful for accessing common fields via DnsRr’s own API, for Debug formatting, or for falling back to the raw key-based getters.

pub fn name(self) -> &'a str

Returns the resource record owner name.

pub fn dns_class(self) -> DnsCls

Returns the resource record DNS class.

pub fn ttl(self) -> u32

Returns the resource record TTL in seconds.

pub fn udp_size(self) -> u16

Sender’s UDP payload size (OPT_UDP_SIZE).

pub fn version(self) -> u8

EDNS version (OPT_VERSION).

pub fn flags(self) -> u16

EDNS flags (OPT_FLAGS).

pub fn option_count(self) -> usize

Returns the number of EDNS options (OPT_OPTIONS).

pub fn options( self, ) -> impl Iterator<Item = (u16, Result<OptValue, OptParseError>)> + 'a

Returns an iterator over EDNS options (OPT_OPTIONS) yielding (option_code, decoded_value) pairs.

The value is decoded according to its registered datatype (see OptValue). For options the linked c-ares does not recognise, decoding may fail; use raw_options to access the underlying byte slice instead.

pub fn raw_options(self) -> impl Iterator<Item = (u16, &'a [u8])>

Returns an iterator over EDNS options (OPT_OPTIONS) yielding (option_code, value_bytes) pairs without decoding.

Trait Implementations

impl<'a> Clone for OptRecord<'a>

fn clone(&self) -> OptRecord<'a>

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl<'a> Copy for OptRecord<'a>

impl Debug for OptRecord<'_>

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

Formats the value using the given formatter.