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03371eb1949c93e1449fce6f862e4acafa83b833
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5 Commits

Author SHA1 Message Date
Joseph Doherty
710f443eda feat(mqtt): wire will message delivery on abnormal disconnect 
Add DeliverWill to MqttPacketHandlers — extracts and clears the will,
then delivers via ProcessInboundClientMsg. Call from CloseConnection
when client is MQTT. Clean DISCONNECT already clears the will (Task 3),
so DeliverWill is a no-op after DISCONNECT. 3 new tests: abnormal
close delivers will, DISCONNECT suppresses will, no-will is a no-op.
 2026-03-01 16:10:53 -05:00
Joseph Doherty
b465d095e3 feat(mqtt): implement QoS 1 PUBACK and QoS 2 PUBREC/PUBREL/PUBCOMP handlers 
QoS 1: deliver message then send PUBACK. QoS 2: store in-memory
pending PUBREL, send PUBREC; on PUBREL deliver and send PUBCOMP.
Wire all four PI-packet dispatches (PUBACK/PUBREC/PUBREL/PUBCOMP)
in parser. Add QoS2Pending dictionary to MqttHandler for in-memory
QoS 2 tracking. 6 new tests for QoS 1/2 flows including full
QoS 2 handshake.
 2026-03-01 16:08:28 -05:00
Joseph Doherty
715367b9ea feat(mqtt): implement PUBLISH QoS 0, SUBSCRIBE, and UNSUBSCRIBE handlers 
Add ParsePub, ParseSubsOrUnsubs, ProcessPub (QoS 0), ProcessSubs,
ProcessUnsubs, EnqueueSubAck, and EnqueueUnsubAck to MqttPacketHandlers.
Wire PUB/SUB/UNSUB dispatch cases in MqttParser. Add ReadSlice to
MqttReader for raw payload extraction. 18 new unit tests covering
parsing, flags, error cases, QoS downgrade, and full flow. 1 new
integration test verifying SUBSCRIBE handshake over TCP.
 2026-03-01 16:04:37 -05:00
Joseph Doherty
95cf20b00b feat(mqtt): implement CONNECT/CONNACK/DISCONNECT packet handlers 
Implement Task 3 of MQTT orchestration:
- Create MqttPacketHandlers.cs with ParseConnect(), ProcessConnect(), EnqueueConnAck(), HandleDisconnect()
- Wire CONNECT and DISCONNECT dispatch in MqttParser.cs
- Parse CONNECT: protocol name/level, flags, keep-alive, client ID, will, auth
- Send CONNACK (4-byte fixed packet with return code)
- DISCONNECT clears will message and closes connection cleanly
- Auto-generate client ID for empty ID + clean session
- Validate reserved bit, will flags, username/password consistency
- Add Reader field to MqttHandler for per-connection parsing
- 11 unit tests for CONNECT parsing and processing
- 1 end-to-end integration test: TCP → CONNECT → CONNACK over the wire
 2026-03-01 15:48:22 -05:00
Joseph Doherty
2e2ffee41a feat(mqtt): add MQTT packet parser, dispatch, and ReadLoop integration 
Implement Task 2 of MQTT orchestration:
- Create MqttParser.cs with loop-based packet parser and dispatch switch
- Add MqttReader field to MqttHandler for per-connection parsing state
- Wire ReadLoop to call MqttParser for MQTT connections
- Implement PINGREQ handler (enqueues PINGRESP)
- CONNECT-first enforcement (rejects non-CONNECT as first packet)
- Partial packet handling via MqttReader pending buffer
- 13 unit tests covering parser, dispatch, partial packets, and edge cases
- Stub dispatch entries for CONNECT, PUBLISH, SUB, UNSUB, DISCONNECT (NotImplementedException)
 2026-03-01 15:41:45 -05:00