Struct Padding 

pub struct Padding<Octs>
where
    Octs: ?Sized,
{ /* private fields */ }

Option data for the padding option.

This option is used to increase the size of a DNS message to a fixed value so eavesdropper can’t dertermine information from the size.

Generally, you should not need to use this type. Instead, you can use the OptBuilder::padding and [OptBuilder::random_padding] methods to add padding to a message – and ignore it when receving one.

The option is defined in RFC 7830.

Implementations

impl Padding<()>

pub const CODE: OptionCode = OptionCode::PADDING

The option code for this option.

impl<Octs> Padding<Octs>

pub fn from_octets(octets: Octs) -> Result<Padding<Octs>, LongOptData>

where Octs: AsRef<[u8]>,

Creates a value from the padding octets.

Returns an error if octets are longer than 65,535 octets.

pub unsafe fn from_octets_unchecked(octets: Octs) -> Padding<Octs>

Creates a value from the padding octets without checking.

Safety

The caller needs to ensure that octets are not longer than 65,535 octets.

pub fn parse<'a, Src>( parser: &mut Parser<'a, Src>, ) -> Result<Padding<Octs>, ParseError>

where Src: Octets<Range<'a> = Octs> + ?Sized,

Parses a value from its wire formal.

impl<Octs> Padding<Octs>

where Octs: ?Sized,

pub fn as_octets(&self) -> &Octs

Returns a reference to the padding octets.

pub fn into_octets(self) -> Octs

where Octs: Sized,

Converts the value into the padding octets.

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

where Octs: AsRef<[u8]>,

Returns a slice of the padding octets.

Trait Implementations

impl<Octs> AsRef<[u8]> for Padding<Octs>

where Octs: AsRef<[u8]> + ?Sized,

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

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

impl<Octs> Borrow<[u8]> for Padding<Octs>

where Octs: AsRef<[u8]> + ?Sized,

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

Immutably borrows from an owned value.

impl<Octs> Clone for Padding<Octs>

where Octs: Clone + ?Sized,

fn clone(&self) -> Padding<Octs>

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl<Octs> ComposeOptData for Padding<Octs>

where Octs: AsRef<[u8]>,

fn compose_len(&self) -> u16

fn compose_option<Target>( &self, target: &mut Target, ) -> Result<(), <Target as OctetsBuilder>::AppendError>

where Target: OctetsBuilder + ?Sized,

impl<Octs> Copy for Padding<Octs>

where Octs: Copy + ?Sized,

impl<Octs> Debug for Padding<Octs>

where Octs: AsRef<[u8]> + ?Sized,

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

Formats the value using the given formatter.

impl<Octs> Display for Padding<Octs>

where Octs: AsRef<[u8]> + ?Sized,

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

Formats the value using the given formatter.

impl<Octs, Name> From<Padding<Octs>> for AllOptData<Octs, Name>

fn from(value: Padding<Octs>) -> AllOptData<Octs, Name>

Converts to this type from the input type.

impl<Octs, SrcOcts> OctetsFrom<Padding<SrcOcts>> for Padding<Octs>

where Octs: OctetsFrom<SrcOcts>,

type Error = <Octs as OctetsFrom<SrcOcts>>::Error

fn try_octets_from( src: Padding<SrcOcts>, ) -> Result<Padding<Octs>, <Padding<Octs> as OctetsFrom<Padding<SrcOcts>>>::Error>

Performs the conversion.

fn octets_from(source: Source) -> Self

where Self::Error: Into<Infallible>,

Performs an infallible conversion.

impl<Octs> OptData for Padding<Octs>

fn code(&self) -> OptionCode

Returns the option code associated with this option.

impl<'a, Octs> ParseOptData<'a, Octs> for Padding<<Octs as Octets>::Range<'a>>

where Octs: Octets,

fn parse_option( code: OptionCode, parser: &mut Parser<'a, Octs>, ) -> Result<Option<Padding<<Octs as Octets>::Range<'a>>>, ParseError>

Parses the option code data.