Added #

• Core utilities

  • PackTool:

    • encodeString, encodeStringPair, encodeInt16, encodeInt32
    • encodeVariableByteInteger, decodeVariableByteInteger
    • encodeProperties for MQTT 5.0 property serialization

  • Common (debugging utility to print byte‐level content)

• Packet builders (Pack):

  • connect, will, publish, pubAck, pubRec, pubRel, pubComp, subAck, unsubAck, pingResp, connAck, disconnect, auth methods that delegate to PackTool.encode*.

• Message classes (all extend AbstractMessage, each with getContents({bool getAsMap = false})):

  • AbstractMessage (base class with protocolLevel, properties, and abstract getContents)
  • Auth, ConnAck, DisConnect, PingResp
  • PubAck, PubRec, PubRel, PubComp (QoS flows)
  • Publish, SubAck, UnSubAck, Will

• Protocol constants and types:

  • constants.dart (MQTT 3.1.1 & 5.0 flags, QoS values, packet‐type integers)
  • hex/property.dart, hex/reason_code.dart (MQTT 5.0 property identifiers and reason codes)
  • protocol/types.dart, protocol/protocol_interface.dart

• Custom exceptions (core/exceptions) for protocol validation:

  • ConnectException, InvalidArgumentException, LengthException, ProtocolException, RuntimeException

Changed #

• Initial PHP implementation fully ported to Dart, preserving directory structure logic:

  • src/ → lib/ with client/, core/, and utils/ subfolders
  • All PHP classes and methods converted to idiomatic Dart equivalents with Uint8List for binary payloads

Fixed #

• Ensured every getContents({bool getAsMap = false}) honors the getAsMap flag (returns a Map<String, dynamic> when true, otherwise a Uint8List)
• Added missing decodeVariableByteInteger to PackTool for MQTT 5.0 property decoding

Notes #

• This is the inaugural release (v0.1.0). Future versions will document any API enhancements, bug fixes, or protocol‐level improvements.