Crate mqtt_client 

mqtt-client — an MQTT 3.1.1 / MQTT 5.0 client written in Rust, exposed to other languages (Kotlin, Swift, and Python) via UniFFI.

The protocol module is a pure, allocation-friendly codec for the MQTT wire format with no networking dependencies; client builds an async, tokio-based client on top of it. The mqtt-broker crate re-uses protocol directly instead of duplicating the codec.

Re-exports

pub use client::ConnectOptions;

pub use client::ConnectResult;

pub use client::MqttAuthHandler;

pub use client::MqttClient;

pub use client::MqttMessage;

pub use client::MqttMessageListener;

pub use client::TlsOptions;

pub use client::WillOptions;

pub use error::MqttError;

pub use protocol::MqttVersion;

pub use protocol::QoS;

Modules

client

Async, tokio-based MQTT client built on top of crate::protocol.

error

Error types shared across the MQTT client (and re-used by the broker crate for the protocol codec it embeds).

protocol

MQTT wire protocol: packet encoding/decoding for both MQTT 3.1.1 and MQTT 5.0.

support

Small cross-crate support utilities shared by mqtt-client, mqtt-broker and the language-binding crates.

Macros

redacted_debug

Implements Debug for a struct, printing the listed fields normally and the secret fields as <redacted>.