Struct domain::base::record::RecordHeader

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pub struct RecordHeader<Name> { /* private fields */ }
Expand description

The header of a resource record.

This type encapsulates the common header of a resource record. It consists of the owner, record type, class, TTL, and the length of the record data. It is effectively a helper type for dealing with resource records encoded in a DNS message.

See Record for more details about resource records.

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impl<Name> RecordHeader<Name>

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pub fn new( owner: Name, rtype: Rtype, class: Class, ttl: Ttl, rdlen: u16, ) -> Self

Creates a new record header from its components.

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impl<Name> RecordHeader<Name>

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pub fn owner(&self) -> &Name

Returns a reference to the owner of the record.

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pub fn rtype(&self) -> Rtype

Returns the record type of the record.

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pub fn class(&self) -> Class

Returns the class of the record.

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pub fn ttl(&self) -> Ttl

Returns the TTL of the record.

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pub fn rdlen(&self) -> u16

Returns the data length of the record.

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pub fn into_record<Data>(self, data: Data) -> Record<Name, Data>

Converts the header into an actual record.

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impl<Octs> RecordHeader<ParsedDname<Octs>>

§Parsing and Composing

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

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impl<'a, Octs: AsRef<[u8]> + ?Sized> RecordHeader<ParsedDname<&'a Octs>>

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pub fn parse_ref(parser: &mut Parser<'a, Octs>) -> Result<Self, ParseError>

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impl<Name> RecordHeader<Name>

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pub fn parse_and_skip<'a, Octs>( parser: &mut Parser<'a, Octs>, ) -> Result<Self, ParseError>
where Self: Parse<'a, Octs>, Octs: Octets,

Parses a record header and then skips over the data.

If the function succeeds, the parser will be positioned right behind the end of the record.

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impl<Octs> RecordHeader<ParsedDname<Octs>>

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pub fn parse_into_record<'a, Src, Data>( self, parser: &mut Parser<'a, Src>, ) -> Result<Option<Record<ParsedDname<Octs>, Data>>, ParseError>
where Src: AsRef<[u8]> + ?Sized, Data: ParseRecordData<'a, Src>,

Parses the remainder of the record and returns it.

The method assumes that the parsers is currently positioned right after the end of the record header. If the record data type D feels capable of parsing a record with a header of self, the method will parse the data and return a full Record<D>. Otherwise, it skips over the record data.

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impl<Name: ToDname> RecordHeader<Name>

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

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pub fn compose_canonical<Target: Composer + ?Sized>( &self, buf: &mut Target, ) -> Result<(), Target::AppendError>

Trait Implementations§

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impl<Name: Clone> Clone for RecordHeader<Name>

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fn clone(&self) -> RecordHeader<Name>

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<Name: Debug> Debug for RecordHeader<Name>

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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<Name: Hash> Hash for RecordHeader<Name>

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

Feeds this value into the given Hasher. Read more
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fn hash_slice<H>(data: &[Self], state: &mut H)
where H: Hasher, Self: Sized,

Feeds a slice of this type into the given Hasher. Read more
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impl<Name: ToDname> Ord for RecordHeader<Name>

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

This method returns an Ordering between self and other. Read more
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fn max(self, other: Self) -> Self
where Self: Sized,

Compares and returns the maximum of two values. Read more
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fn min(self, other: Self) -> Self
where Self: Sized,

Compares and returns the minimum of two values. Read more
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fn clamp(self, min: Self, max: Self) -> Self
where Self: Sized + PartialOrd,

Restrict a value to a certain interval. Read more
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impl<Name, NName> PartialEq<RecordHeader<NName>> for RecordHeader<Name>
where Name: ToDname, NName: ToDname,

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fn eq(&self, other: &RecordHeader<NName>) -> 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<Name, NName> PartialOrd<RecordHeader<NName>> for RecordHeader<Name>
where Name: ToDname, NName: ToDname,

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

This method returns an ordering between self and other values if one exists. Read more
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fn lt(&self, other: &Rhs) -> bool

Tests less than (for self and other) and is used by the < operator. Read more
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fn le(&self, other: &Rhs) -> bool

Tests less than or equal to (for self and other) and is used by the <= operator. Read more
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fn gt(&self, other: &Rhs) -> bool

Tests greater than (for self and other) and is used by the > operator. Read more
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fn ge(&self, other: &Rhs) -> bool

Tests greater than or equal to (for self and other) and is used by the >= operator. Read more
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impl<Name: ToDname> Eq for RecordHeader<Name>

Auto Trait Implementations§

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impl<Name> Freeze for RecordHeader<Name>
where Name: Freeze,

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impl<Name> RefUnwindSafe for RecordHeader<Name>
where Name: RefUnwindSafe,

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impl<Name> Send for RecordHeader<Name>
where Name: Send,

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impl<Name> Sync for RecordHeader<Name>
where Name: Sync,

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impl<Name> Unpin for RecordHeader<Name>
where Name: Unpin,

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impl<Name> UnwindSafe for RecordHeader<Name>
where Name: UnwindSafe,

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> 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