Struct domain_core::bits::opt::Opt

pub struct Opt { /* fields omitted */ }

OPT record data.

This type wraps a bytes value containing the record data of an OPT record.

Methods

impl Opt

pub fn from_bytes(bytes: Bytes) -> Result<Self, ShortBuf>

Creates OPT record data from the underlying bytes value.

The function checks whether the bytes value contains a sequence of options. It does not check whether the options itself are valid.

Important traits for OptIter<D>

impl<D: OptData> Iterator for OptIter<D> type Item = Result<D, D::ParseErr>;

pub fn iter<D: OptData>(&self) -> OptIter<D>

Returns an iterator over options of a given type.

The returned iterator will return only options represented by type D and quietly skip over all the others.

Trait Implementations

impl Compose for Opt

fn compose_len(&self) -> usize

Returns the number of bytes this value will need without compression.

fn compose<B: BufMut>(&self, buf: &mut B)

Appends the uncompressed representation of this value to buf.

impl Compress for Opt

fn compress(&self, buf: &mut Compressor) -> Result<(), ShortBuf>

Appends the wire-format representation of the value to buf.

impl ParseAll for Opt

type Err = ShortBuf

The type returned when parsing fails.

fn parse_all(parser: &mut Parser, len: usize) -> Result<Self, Self::Err>

Parses a value len bytes long from the beginning of the parser.

impl RtypeRecordData for Opt

const RTYPE: Rtype

The record type of a value of this type.

impl Eq for Opt

impl Clone for Opt

fn clone(&self) -> Opt

Returns a copy of the value.

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

Performs copy-assignment from source.

impl PartialOrd<Opt> for Opt

fn partial_cmp(&self, other: &Opt) -> Option<Ordering>

This method returns an ordering between self and other values if one exists.

fn lt(&self, other: &Opt) -> bool

This method tests less than (for self and other) and is used by the < operator.

fn le(&self, other: &Opt) -> bool

This method tests less than or equal to (for self and other) and is used by the <= operator.

fn gt(&self, other: &Opt) -> bool

This method tests greater than (for self and other) and is used by the > operator.

fn ge(&self, other: &Opt) -> bool

This method tests greater than or equal to (for self and other) and is used by the >= operator.

impl PartialEq<Opt> for Opt

fn eq(&self, other: &Opt) -> bool

This method tests for self and other values to be equal, and is used by ==.

fn ne(&self, other: &Opt) -> bool

This method tests for !=.

impl AsRef<Opt> for OptRecord

fn as_ref(&self) -> &Opt

Performs the conversion.

impl Ord for Opt

fn cmp(&self, other: &Opt) -> Ordering

This method returns an Ordering between self and other.

fn max(self, other: Self) -> Self

Compares and returns the maximum of two values.

fn min(self, other: Self) -> Self

Compares and returns the minimum of two values.

impl<N> From<Opt> for AllRecordData<N>

fn from(value: Opt) -> Self

Performs the conversion.

impl Hash for Opt

fn hash<__H: Hasher>(&self, state: &mut __H)

Feeds this value into the given [Hasher].

fn hash_slice<H>(data: &[Self], state: &mut H) where
    H: Hasher, 

Feeds a slice of this type into the given [Hasher].

impl Debug for Opt

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

Formats the value using the given formatter.

impl Display for Opt

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

Formats the value using the given formatter.