Struct MqttBytes 

#[repr(transparent)]
pub struct MqttBytes([u8]);

A byte slice that satisfies the MQTT v5 Binary Data length limit (at most 65 535 bytes).

This is an unsized type like [[u8]]. Use it for borrowed references and MqttBytesBuf for owned values.

Tuple Fields

0: [u8]

Implementations

impl MqttBytes

pub const EMPTY: &'static MqttBytes

The empty bytes.

pub const unsafe fn new_unchecked(data: &[u8]) -> &MqttBytes

Create binary data without validating the length invariant.

Safety

The caller must guarantee that data.len() <= 65_535.

pub const fn new(data: &[u8]) -> Result<&MqttBytes, DataError>

Validate and wrap a &[u8].

Errors

Returns DataError::TooLong if data exceeds 65 535 bytes.

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

Returns the raw byte slice.

pub const fn len(&self) -> usize

Returns the length in bytes.

pub const fn len_u16(&self) -> u16

Returns the length as a u16 for encoding.

pub const fn encoded_len(&self) -> usize

Returns the number of bytes needed to encode this value.

pub const fn is_empty(&self) -> bool

Returns true if the byte slice is empty.

Trait Implementations

impl AsRef<[u8]> for MqttBytes

fn as_ref(&self) -> &[u8]

Converts this type into a shared reference of the (usually inferred) input type.

impl AsRef<MqttBytes> for MqttBytesBuf

fn as_ref(&self) -> &MqttBytes

Converts this type into a shared reference of the (usually inferred) input type.

impl Borrow<MqttBytes> for MqttBytesBuf

fn borrow(&self) -> &MqttBytes

Immutably borrows from an owned value.

impl Debug for MqttBytes

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

Formats the value using the given formatter.

impl Hash for MqttBytes

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

where __H: Hasher,

Feeds this value into the given Hasher.

impl PartialEq for MqttBytes

fn eq(&self, other: &MqttBytes) -> 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 ToOwned for MqttBytes

type Owned = MqttBytesBuf

The resulting type after obtaining ownership.

fn to_owned(&self) -> <MqttBytes as ToOwned>::Owned

Creates owned data from borrowed data, usually by cloning.

fn clone_into(&self, target: &mut Self::Owned)

Uses borrowed data to replace owned data, usually by cloning.

impl<'a> TryFrom<&'a [u8]> for &'a MqttBytes

type Error = DataError

The type returned in the event of a conversion error.

fn try_from( value: &'a [u8], ) -> Result<&'a MqttBytes, <&'a MqttBytes as TryFrom<&'a [u8]>>::Error>

Performs the conversion.

impl Eq for MqttBytes

impl StructuralPartialEq for MqttBytes