Enum Tag 

pub enum Tag {
    Reserved(u64),
    Application(u64),
}

Tags distinguishing different application-layer protocols.

Currently, 8 bytes represent tags (u64).

u64 should offer enough space to avoid collisions and tag attacks.

Variants

Reserved(u64)

Application(u64)

Implementations

impl Tag

pub const APPLICATION_TAG_RANGE: Range<Self>

Application tag range for external usage

pub const MAX: u64 = 2_305_843_009_213_693_951u64

The maximum value of a tag.

The maximum value is determined by the fact that the 3 most significant bits must be set to 0 in version 1.

pub const SIZE: usize = 8usize

Size of a tag in bytes.

pub fn from_be_bytes(bytes: [u8; 8]) -> Self

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

pub fn as_u64(&self) -> u64

Trait Implementations

impl Clone for Tag

fn clone(&self) -> Tag

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for Tag

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

Formats the value using the given formatter.

impl<'a> Deserialize<'a> for Tag

Available on crate feature serde only.

fn deserialize<D>(deserializer: D) -> Result<Self, D::Error>

where D: Deserializer<'a>,

Deserialize this value from the given Serde deserializer.

impl Display for Tag

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

Formats the value using the given formatter.

impl From<ReservedTag> for Tag

fn from(tag: ReservedTag) -> Self

Converts to this type from the input type.

impl<T: Into<u64>> From<T> for Tag

fn from(tag: T) -> Self

Converts to this type from the input type.

impl FromStr for Tag

type Err = ParseIntError

The associated error which can be returned from parsing.

fn from_str(s: &str) -> Result<Self, Self::Err>

Parses a string s to return a value of this type.

impl Hash for Tag

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, Self: Sized,

Feeds a slice of this type into the given Hasher.

impl Ord for Tag

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

This method returns an Ordering between self and other.

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

where Self: Sized,

Compares and returns the maximum of two values.

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

where Self: Sized,

Compares and returns the minimum of two values.

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

where Self: Sized,

Restrict a value to a certain interval.

impl PartialEq for Tag

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

Tests for self and other values to be equal, and is used by ==.

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

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

impl PartialOrd for Tag

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

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

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

Tests less than (for self and other) and is used by the < operator.

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

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

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

Tests greater than (for self and other) and is used by the > operator.

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

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

impl Serialize for Tag

Available on crate feature serde only.

fn serialize<S>(&self, serializer: S) -> Result<S::Ok, S::Error>

where S: Serializer,

Serialize this value into the given Serde serializer.

impl Copy for Tag

impl Eq for Tag

impl StructuralPartialEq for Tag