Struct Opt

pub struct Opt { /* private fields */ }

OPT record data.

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

Implementations

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.

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 AsRef<Opt> for OptRecord

fn as_ref(&self) -> &Opt

Converts this type into a shared reference of the (usually inferred) input type.

impl Clone for Opt

fn clone(&self) -> Opt

Returns a duplicate of the value.

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

Performs copy-assignment from source.

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 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.

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

fn from(value: Opt) -> Self

Converts to this type from the input type.

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, Self: Sized,

Feeds a slice of this type into the given Hasher.

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

where Self: Sized,

Compares and returns the maximum of two values.

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

where Self: Sized,

Compares and returns the minimum of two values.

fn clamp(self, min: Self, max: Self) -> Self

where Self: Sized,

Restrict a value to a certain interval.

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 PartialEq for Opt

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

Tests for self and other values to be equal, and is used by ==.

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

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl PartialOrd 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: &Rhs) -> bool

Tests less than (for self and other) and is used by the < operator.

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

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

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

Tests greater than (for self and other) and is used by the > operator.

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

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

impl RtypeRecordData for Opt

const RTYPE: Rtype = Rtype::Opt

The record type of a value of this type.

impl Eq for Opt

impl StructuralPartialEq for Opt