Struct async_dnssd::Class

pub struct Class(pub u16);

DNS CLASS

Originally QCLASS was a superset of CLASS; RFC 6895 now defines:

There are currently two subcategories of DNS CLASSes: normal, data-containing classes; and QCLASSes that are only meaningful in queries or updates.

ANY

QTYPE 255 either (rules from RFC 6895):

• doesn’t have a mnemonic, violating the existence rule
• has “*” as mnemonic, violating the formatting rule
• has “ANY” as mnemonic, violating the uniquess rule (class ANY)

The QCLASS ANY is mostly useless anyway and shouldn’t be used in normal queries.

Tuple Fields

0: u16

Implementations

impl Class

pub const IN: Self

CLASS Internet

pub const CH: Self

CLASS “Chaos”

pub const HS: Self

CLASS “Hesiod”

pub const NONE: Self

QCLASS NONE

pub const ANY: Self

QCLASS “*” (ANY)

Trait Implementations

impl Clone for Class

fn clone(&self) -> Class

Returns a copy of the value.

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

Performs copy-assignment from source.

impl Debug for Class

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

Formats the value using the given formatter.

impl Hash for Class

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

Feeds this value into the given Hasher.

fn hash_slice<H>(data: &[Self], state: &mut H) where
    H: Hasher, 

Feeds a slice of this type into the given Hasher.

impl Ord for Class

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

This method returns an Ordering between self and other.

fn max(self, other: Self) -> Self

Compares and returns the maximum of two values.

fn min(self, other: Self) -> Self

Compares and returns the minimum of two values.

fn clamp(self, min: Self, max: Self) -> Self

Restrict a value to a certain interval.

impl PartialEq<Class> for Class

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

This method tests for self and other values to be equal, and is used by ==.

fn ne(&self, other: &Class) -> bool

This method tests for !=.

impl PartialOrd<Class> for Class

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

This method returns an ordering between self and other values if one exists.

fn lt(&self, other: &Rhs) -> bool

This method tests less than (for self and other) and is used by the < operator.

fn le(&self, other: &Rhs) -> bool

This method tests less than or equal to (for self and other) and is used by the <= operator.

fn gt(&self, other: &Rhs) -> bool

This method tests greater than (for self and other) and is used by the > operator.

fn ge(&self, other: &Rhs) -> bool

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

impl Copy for Class

impl Eq for Class

impl StructuralEq for Class

impl StructuralPartialEq for Class