pub struct StandardServerCookie(_);
Expand description

An interoperable server cookie for DNS cookies.

In the original specification, the server cookie was of variable length and rules for its generation were left to the server implementers. This resulted in interoperability problems if servers from multiple vendors were placed behind the same public address. Thus, RFC 9018 defined a standard mechanism of the content and generation of the cookie. This type is such a standard server cookie.

This standard server cookie consists of a 1 octet version number (currently 1), 3 reserved octets that must be zero, a 4 octet timestamp as seconds since the Unix epoch, and 8 octets of hash value.

In version 1, the hash is calculated feeding the SipHash-2-4 that has been initialized with a server secret the concatenation of client cookie, version, reserved, timestamp, client IP address. Generatin and checking the hash is available if the siphasher feature is enabled.

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impl StandardServerCookie

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pub fn new( version: u8, reserved: [u8; 3], timestamp: Serial, hash: [u8; 8] ) -> Self

Creates a new server cookie from the provided components.

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pub fn version(self) -> u8

Returns the version field of the cookie.

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pub fn reserved(self) -> [u8; 3]

Returns the reserved field of the cookie.

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pub fn timestamp(self) -> Serial

Returns the timestamp field of the cookie.

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pub fn hash(self) -> [u8; 8]

Returns the hash field of the cookie.

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pub fn set_hash(&mut self, hash: [u8; 8])

Sets the hash field to the given value.

Trait Implementations§

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impl Clone for StandardServerCookie

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fn clone(&self) -> StandardServerCookie

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 StandardServerCookie

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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 Display for StandardServerCookie

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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 From<StandardServerCookie> for ServerCookie

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fn from(src: StandardServerCookie) -> Self

Converts to this type from the input type.
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impl Hash for StandardServerCookie

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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 Ord for StandardServerCookie

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

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

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

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

Restrict a value to a certain interval. Read more
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impl PartialEq<StandardServerCookie> for StandardServerCookie

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

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

This method tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.
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impl PartialOrd<StandardServerCookie> for StandardServerCookie

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fn partial_cmp(&self, other: &StandardServerCookie) -> 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

This method 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

This method 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

This method 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

This method tests greater than or equal to (for self and other) and is used by the >= operator. Read more
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impl Copy for StandardServerCookie

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impl Eq for StandardServerCookie

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impl StructuralEq for StandardServerCookie

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impl StructuralPartialEq for StandardServerCookie

Auto Trait Implementations§

Blanket Implementations§

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impl<T> Any for Twhere 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 Twhere 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 Twhere 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> From<T> for T

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fn from(t: T) -> T

Returns the argument unchanged.

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impl<T, U> Into<U> for Twhere 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 Sourcewhere 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) -> Targetwhere Self::Error: Into<Infallible>,

Performs an infallible conversion.
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impl<T> ToOwned for Twhere 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> ToString for Twhere T: Display + ?Sized,

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default fn to_string(&self) -> String

Converts the given value to a String. Read more
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impl<T, U> TryFrom<U> for Twhere 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 Twhere 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 Twhere V: MultiLane<T>,

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fn vzip(self) -> V