Enum Property 

pub enum Property<'a> {
    PayloadFormatIndicator(PayloadFormat),
    MessageExpiryInterval(u32),
    ContentType(&'a MqttStr),
    ResponseTopic(&'a Topic),
    CorrelationData(&'a MqttBytes),
    SubscriptionIdentifier(NonZeroVbi),
    SessionExpiryInterval(u32),
    AssignedClientIdentifier(&'a MqttStr),
    ServerKeepAlive(u16),
    AuthenticationMethod(&'a MqttStr),
    AuthenticationData(&'a MqttBytes),
    RequestProblemInformation(bool),
    WillDelayInterval(u32),
    RequestResponseInformation(bool),
    ResponseInformation(&'a MqttStr),
    ServerReference(&'a MqttStr),
    ReasonString(&'a MqttStr),
    ReceiveMaximum(NonZeroU16),
    TopicAliasMaximum(u16),
    TopicAlias(NonZeroU16),
    MaximumQoS(QoS),
    RetainAvailable(bool),
    UserProperty(&'a MqttStr, &'a MqttStr),
    MaximumPacketSize(NonZeroU32),
    WildcardSubscriptionAvailable(bool),
    SubscriptionIdentifierAvailable(bool),
    SharedSubscriptionAvailable(bool),
}

A typed MQTT v5 property. Each variant statically guarantees the correct value type for the property identifier.

Variants

PayloadFormatIndicator(PayloadFormat)

§3.3.2.3.2 — 0 = unspecified bytes, 1 = UTF-8.

MessageExpiryInterval(u32)

Message expiry interval in seconds.

ContentType(&'a MqttStr)

MIME content type of the payload.

ResponseTopic(&'a Topic)

Response topic for request/response pattern.

CorrelationData(&'a MqttBytes)

Correlation data for request/response matching.

SubscriptionIdentifier(NonZeroVbi)

Encoded as a Variable Byte Integer on the wire; must be 1–268 435 455.

SessionExpiryInterval(u32)

Session expiry interval in seconds.

AssignedClientIdentifier(&'a MqttStr)

Client identifier assigned by the server.

ServerKeepAlive(u16)

Server-specified keep-alive interval in seconds.

AuthenticationMethod(&'a MqttStr)

Authentication method name.

AuthenticationData(&'a MqttBytes)

Authentication data.

RequestProblemInformation(bool)

§3.1.2.11.7 — false = 0, true = 1.

WillDelayInterval(u32)

Will delay interval in seconds.

RequestResponseInformation(bool)

§3.1.2.11.6 — false = 0, true = 1.

ResponseInformation(&'a MqttStr)

Reference to response information string.

ServerReference(&'a MqttStr)

Server reference for redirection.

ReasonString(&'a MqttStr)

Human-readable reason string.

ReceiveMaximum(NonZeroU16)

§3.2.2.3.3 — must not be zero.

TopicAliasMaximum(u16)

Maximum topic alias value the receiver accepts.

TopicAlias(NonZeroU16)

§3.3.2.3.4 — must not be zero.

MaximumQoS(QoS)

§3.2.2.3.4 — only QoS 0 or 1 are valid on the wire.

RetainAvailable(bool)

§3.2.2.3.5 — false = 0, true = 1.

UserProperty(&'a MqttStr, &'a MqttStr)

User-defined key-value pair.

MaximumPacketSize(NonZeroU32)

§3.2.2.3.6 — must not be zero.

WildcardSubscriptionAvailable(bool)

§3.2.2.3.12 — false = 0, true = 1.

SubscriptionIdentifierAvailable(bool)

§3.2.2.3.13 — false = 0, true = 1.

SharedSubscriptionAvailable(bool)

§3.2.2.3.14 — false = 0, true = 1.

Implementations

impl Property<'_>

pub const fn id(&self) -> PropertyId

Returns the property identifier for this property.

pub const fn encoded_len(&self) -> usize

Encoded byte length of this property on the wire (id VBI + value).

Trait Implementations

impl<'a> Clone for Property<'a>

fn clone(&self) -> Property<'a>

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl<'a> Debug for Property<'a>

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

Formats the value using the given formatter.

impl<'a> PartialEq for Property<'a>

fn eq(&self, other: &Property<'a>) -> 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<'a> Copy for Property<'a>

impl<'a> Eq for Property<'a>

impl<'a> StructuralPartialEq for Property<'a>