Module wire 

Wire-format primitives.

Data types (MqttStr, MqttString, MqttBytes, MqttBytesBuf), core protocol types (PacketId, QoS, FixedHeader, PacketType), and Reader / Writer for low-level encoding and decoding.

Modules

mqtt_bytes 🔒

mqtt_bytes_buf 🔒 alloc

mqtt_str 🔒

mqtt_string 🔒 alloc

reader 🔒

vbi 🔒

writer 🔒

Structs

FixedHeader

Fixed header of an MQTT packet (first byte + remaining length).

MqttBytes

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

MqttBytesBufalloc

Owned binary data that satisfies the MQTT v5 length limit.

MqttStr

A UTF-8 string that satisfies all MQTT v5 requirements:

MqttStringalloc

An owned UTF-8 string that satisfies all MQTT v5 requirements.

NonZeroVbi

Non-zero Variable Byte Integer.

PacketId

MQTT Packet Identifier (§2.2.1).

Reader

MQTT wire format reader.

Vbi

Variable Byte Integer (VBI) as defined in MQTT v5 §1.5.5.

Writer

MQTT wire format writer.

Enums

DataError

Error returned when constructing an MqttStr or MqttBytes from invalid input.

DecodeError

Errors that can occur during decoding.

EncodeError

Errors that can occur during encoding.

PacketType

MQTT v5 packet type (4-bit value from the fixed header).

QoS

Quality of Service level.

Constants

MAX_DATA_LEN

Maximum byte length of an MQTT UTF-8 Encoded String or Binary Data field (limited by the 2-byte length prefix).