MqttUtf8Encoding class

Encoding implementation that can encode and decode strings in the MQTT UTF8 string format.

Text fields within the MQTT Control Packets are encoded as UTF-8 strings. UTF-8 RFC3629 is an efficient encoding of Unicode Unicode characters that optimizes the encoding of ASCII characters in support of text-based communications.

Each of these strings is prefixed with a two byte integer length field that gives the number of bytes in a UTF-8 encoded string itself. Consequently, the maximum size of a UTF-8 encoded string is 65,535 bytes.

Constructors

MqttUtf8Encoding()

Properties

hashCode → int

The hash code for this object.

no setter, inherited

runtimeType → Type

A representation of the runtime type of the object.

no setter, inherited

Methods

byteCount(String chars) → int

Gets the total length of a UTF8 encoded string including the length bytes

fromUtf8(Uint8Buffer bytes) → String

Decodes the bytes in the specified MQTT UTF8 encoded byte array into a string.

length(Uint8Buffer bytes) → int

Gets the length of a UTF8 encoded string from the length bytes

noSuchMethod(Invocation invocation) → dynamic

Invoked when a nonexistent method or property is accessed.

inherited

toString() → String

A string representation of this object.

inherited

toUtf8(String s) → Uint8Buffer

Encodes all the characters in the specified string into a sequence of bytes.

Operators

operator ==(Object other) → bool

The equality operator.

inherited