Struct HashCompressor

pub struct HashCompressor<Target> { /* private fields */ }

A domain name compressor that uses a hash table.

This type wraps around an octets builder and implements domain name compression for it. It stores the position of any domain name it has seen in a hash table.

The position of a domain name is calculated relative to the beginning of the underlying octets builder. This means that this builder must represent the message only. This means that if you are using the StreamTarget, you need to place it inside this type, not the other way around.

Implementations

impl<Target> HashCompressor<Target>

pub fn new(target: Target) -> Self

Creates a new compressor from an underlying octets builder.

pub fn as_target(&self) -> &Target

Returns a reference to the underlying octets builder.

pub fn into_target(self) -> Target

Converts the compressor into the underlying octets builder.

pub fn as_slice(&self) -> &[u8]

where Target: AsRef<[u8]>,

Returns an octets slice of the data.

pub fn as_slice_mut(&mut self) -> &mut [u8]

where Target: AsMut<[u8]>,

Returns an mutable octets slice of the data.

Trait Implementations

impl<Target: AsMut<[u8]>> AsMut<[u8]> for HashCompressor<Target>

fn as_mut(&mut self) -> &mut [u8]

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

impl<Target: AsRef<[u8]>> AsRef<[u8]> for HashCompressor<Target>

fn as_ref(&self) -> &[u8]

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

impl<Target: Clone> Clone for HashCompressor<Target>

fn clone(&self) -> HashCompressor<Target>

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl<Target: Composer> Composer for HashCompressor<Target>

fn append_compressed_name<N: ToName + ?Sized>( &mut self, name: &N, ) -> Result<(), Self::AppendError>

Appends a domain name using name compression if supported.

fn can_compress(&self) -> bool

impl<Target: Debug> Debug for HashCompressor<Target>

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

Formats the value using the given formatter.

impl<Target: OctetsBuilder> OctetsBuilder for HashCompressor<Target>

type AppendError = <Target as OctetsBuilder>::AppendError

The error type when appending data fails.

fn append_slice(&mut self, slice: &[u8]) -> Result<(), Self::AppendError>

Appends the content of a slice to the builder.

impl<Target: Composer> Truncate for HashCompressor<Target>

fn truncate(&mut self, len: usize)

Truncate the sequence to len octets.