Enum QoS 

pub enum QoS {
    AtMostOnce = 0,
    AtLeastOnce = 1,
    ExactlyOnce = 2,
}

MQTT’s Quality of Service

Variants

AtMostOnce = 0

Quality of Service Level 0. Publications with this level are only sent once.

AtLeastOnce = 1

Quality of Service Level 1. Publications with this level are sent until a PUBACK indicates that it was received.

ExactlyOnce = 2

Quality of Service Level 2. Publications with this level are followed by a handshake assuring it is received once.

Trait Implementations

impl Clone for QoS

fn clone(&self) -> QoS

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for QoS

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

Formats the value using the given formatter.

impl From<IdentifiedQoS> for QoS

fn from(value: IdentifiedQoS) -> Self

Converts to this type from the input type.

impl Ord for QoS

fn cmp(&self, other: &QoS) -> 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 QoS

fn eq(&self, other: &QoS) -> 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 QoS

fn partial_cmp(&self, other: &QoS) -> 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 Copy for QoS

impl Eq for QoS

impl StructuralPartialEq for QoS