Struct domain::base::header::HeaderSection

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pub struct HeaderSection { /* private fields */ }
Expand description

The complete header section of a DNS message.

Consists of a Header directly followed by a HeaderCounts.

You can create an owned value via the new function or the Default trait and acquire a pointer referring the the header section of an existing DNS message via the for_message_slice or for_message_slice_mut functions.

Implementations§

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impl HeaderSection

§Creation and Conversion

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pub fn new() -> Self

Creates a new header section.

The value will have all header and header counts fields set to zero or false.

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pub fn for_message_slice(s: &[u8]) -> &HeaderSection

Creates a reference from the octets slice of a message.

§Panics

This function panics if the octets slice is shorter than 12 octets.

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pub fn for_message_slice_mut(s: &mut [u8]) -> &mut HeaderSection

Creates a mutable reference from the octets slice of a message.

§Panics

This function panics if the octets slice is shorter than 12 octets.

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

Returns a reference to the underlying octets slice.

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impl HeaderSection

§Access to Header and Counts

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pub fn header(&self) -> &Header

Returns a reference to the header.

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pub fn header_mut(&mut self) -> &mut Header

Returns a mutable reference to the header.

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pub fn counts(&self) -> &HeaderCounts

Returns a reference to the header counts.

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pub fn counts_mut(&mut self) -> &mut HeaderCounts

Returns a mutable reference to the header counts.

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impl HeaderSection

§Parsing and Composing

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pub fn parse<Octs: AsRef<[u8]>>( parser: &mut Parser<'_, Octs>, ) -> Result<Self, ParseError>

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pub fn compose<Target: OctetsBuilder + ?Sized>( &self, target: &mut Target, ) -> Result<(), Target::AppendError>

Trait Implementations§

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impl AsMut<Header> for HeaderSection

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fn as_mut(&mut self) -> &mut Header

Converts this type into a mutable reference of the (usually inferred) input type.
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impl AsMut<HeaderCounts> for HeaderSection

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fn as_mut(&mut self) -> &mut HeaderCounts

Converts this type into a mutable reference of the (usually inferred) input type.
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impl AsRef<Header> for HeaderSection

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fn as_ref(&self) -> &Header

Converts this type into a shared reference of the (usually inferred) input type.
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impl AsRef<HeaderCounts> for HeaderSection

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fn as_ref(&self) -> &HeaderCounts

Converts this type into a shared reference of the (usually inferred) input type.
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impl Clone for HeaderSection

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fn clone(&self) -> HeaderSection

Returns a copy of the value. Read more
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fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source. Read more
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impl Debug for HeaderSection

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

Formats the value using the given formatter. Read more
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impl Default for HeaderSection

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fn default() -> HeaderSection

Returns the “default value” for a type. Read more
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impl PartialEq for HeaderSection

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

Tests for self and other values to be equal, and is used by ==.
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fn ne(&self, other: &Rhs) -> bool

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

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impl Eq for HeaderSection

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impl StructuralPartialEq for HeaderSection

Auto Trait Implementations§

Blanket Implementations§

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impl<T> Any for T
where T: 'static + ?Sized,

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fn type_id(&self) -> TypeId

Gets the TypeId of self. Read more
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impl<T> Borrow<T> for T
where T: ?Sized,

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fn borrow(&self) -> &T

Immutably borrows from an owned value. Read more
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impl<T> BorrowMut<T> for T
where T: ?Sized,

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fn borrow_mut(&mut self) -> &mut T

Mutably borrows from an owned value. Read more
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impl<T> CloneToUninit for T
where T: Clone,

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default unsafe fn clone_to_uninit(&self, dst: *mut T)

🔬This is a nightly-only experimental API. (clone_to_uninit)
Performs copy-assignment from self to dst. Read more
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impl<T> CloneToUninit for T
where T: Copy,

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unsafe fn clone_to_uninit(&self, dst: *mut T)

🔬This is a nightly-only experimental API. (clone_to_uninit)
Performs copy-assignment from self to dst. Read more
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impl<T> From<T> for T

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fn from(t: T) -> T

Returns the argument unchanged.

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impl<T> Instrument for T

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fn instrument(self, span: Span) -> Instrumented<Self>

Instruments this type with the provided Span, returning an Instrumented wrapper. Read more
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fn in_current_span(self) -> Instrumented<Self>

Instruments this type with the current Span, returning an Instrumented wrapper. Read more
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impl<T, U> Into<U> for T
where U: From<T>,

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fn into(self) -> U

Calls U::from(self).

That is, this conversion is whatever the implementation of From<T> for U chooses to do.

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impl<Source, Target> OctetsInto<Target> for Source
where Target: OctetsFrom<Source>,

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type Error = <Target as OctetsFrom<Source>>::Error

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fn try_octets_into( self, ) -> Result<Target, <Source as OctetsInto<Target>>::Error>

Performs the conversion.
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fn octets_into(self) -> Target
where Self::Error: Into<Infallible>,

Performs an infallible conversion.
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impl<T> ToOwned for T
where T: Clone,

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type Owned = T

The resulting type after obtaining ownership.
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fn to_owned(&self) -> T

Creates owned data from borrowed data, usually by cloning. Read more
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fn clone_into(&self, target: &mut T)

Uses borrowed data to replace owned data, usually by cloning. Read more
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impl<T, U> TryFrom<U> for T
where U: Into<T>,

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type Error = Infallible

The type returned in the event of a conversion error.
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fn try_from(value: U) -> Result<T, <T as TryFrom<U>>::Error>

Performs the conversion.
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impl<T, U> TryInto<U> for T
where U: TryFrom<T>,

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type Error = <U as TryFrom<T>>::Error

The type returned in the event of a conversion error.
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fn try_into(self) -> Result<U, <U as TryFrom<T>>::Error>

Performs the conversion.
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impl<V, T> VZip<V> for T
where V: MultiLane<T>,

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fn vzip(self) -> V

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impl<T> WithSubscriber for T

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fn with_subscriber<S>(self, subscriber: S) -> WithDispatch<Self>
where S: Into<Dispatch>,

Attaches the provided Subscriber to this type, returning a WithDispatch wrapper. Read more
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fn with_current_subscriber(self) -> WithDispatch<Self>

Attaches the current default Subscriber to this type, returning a WithDispatch wrapper. Read more