Struct UnsubAck 

pub struct UnsubAck { /* private fields */ }

Represents an MQTT v5 UnsubAck packet

The UnsubAck packet is sent by the server to acknowledge receipt and processing of an UNSUBSCRIBE packet. It contains:

• Packet Identifier matching the UNSUBSCRIBE packet
• List of return codes indicating unsubscription results
• Optional properties (v5 only)

Example

use mqute_codec::protocol::Codes;
use mqute_codec::protocol::v5::{UnsubAck, ReasonCode};

// Successful unsubscription
let unsuback = UnsubAck::new(
    1234,
    None,
    vec![ReasonCode::Success, ReasonCode::Success]
);

assert_eq!(unsuback.packet_id(), 1234u16);

// Mixed results unsubscription
let unsuback = UnsubAck::new(
    5678,
    None,
    vec![
        ReasonCode::Success,
        ReasonCode::NoSubscriptionExisted
    ]
);

let codes = Codes::new(vec![ReasonCode::Success, ReasonCode::NoSubscriptionExisted]);
assert_eq!(unsuback.codes(), codes);

Implementations

impl UnsubAck

pub fn new<T>( packet_id: u16, properties: Option<UnsubAckProperties>, codes: T, ) -> Self

where T: IntoIterator<Item = ReasonCode>,

Creates a new UnsubAck packet

Panics

• If no reason codes are provided
• If any reason code is invalid for UnsubAck

pub fn packet_id(&self) -> u16

Returns the packet identifier

pub fn codes(&self) -> Codes<ReasonCode>

Returns the list of reason codes

pub fn properties(&self) -> Option<UnsubAckProperties>

Returns a copy of the properties (if any)

Trait Implementations

impl Clone for UnsubAck

fn clone(&self) -> UnsubAck

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for UnsubAck

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

Formats the value using the given formatter.

impl Decode for UnsubAck

fn decode(packet: RawPacket) -> Result<Self, Error>

Decodes an UnsubAck packet from raw bytes

impl Encode for UnsubAck

fn encode(&self, buf: &mut BytesMut) -> Result<(), Error>

Encodes the UnsubAck packet into a byte buffer

fn payload_len(&self) -> usize

Calculates the total packet length

impl From<UnsubAck> for Packet

fn from(value: UnsubAck) -> Self

Converts to this type from the input type.

impl PartialEq for UnsubAck

fn eq(&self, other: &UnsubAck) -> 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 Eq for UnsubAck

impl StructuralPartialEq for UnsubAck

impl UnsubAck for UnsubAck