Files
natsnet/docs/plans/phases/phase6sessions/session-22.md
Joseph Doherty 88b1391ef0 feat: port session 07 — Protocol Parser, Auth extras (TPM/certidp/certstore), Internal utilities & data structures
Session 07 scope (5 features, 17 tests, ~1165 Go LOC):
- Protocol/ParserTypes.cs: ParserState enum (79 states), PublishArgument, ParseContext
- Protocol/IProtocolHandler.cs: handler interface decoupling parser from client
- Protocol/ProtocolParser.cs: Parse(), ProtoSnippet(), OverMaxControlLineLimit(),
  ProcessPub/HeaderPub/RoutedMsgArgs/RoutedHeaderMsgArgs, ClonePubArg(), GetHeader()
- tests/Protocol/ProtocolParserTests.cs: 17 tests via TestProtocolHandler stub

Auth extras from session 06 (committed separately):
- Auth/TpmKeyProvider.cs, Auth/CertificateIdentityProvider/, Auth/CertificateStore/

Internal utilities & data structures (session 06 overflow):
- Internal/AccessTimeService.cs, ElasticPointer.cs, SystemMemory.cs, ProcessStatsProvider.cs
- Internal/DataStructures/GenericSublist.cs, HashWheel.cs
- Internal/DataStructures/SubjectTree.cs, SubjectTreeNode.cs, SubjectTreeParts.cs

All 461 tests pass (460 unit + 1 integration). DB updated for features 2588-2592 and tests 2598-2614.
2026-02-26 13:16:56 -05:00

1.6 KiB
Raw Blame History

Session 22: MQTT

Summary

MQTT 3.1.1/5.0 protocol adapter — allows MQTT clients to connect to NATS and interact with JetStream for persistence.

Scope

Go File Features Feature IDs Go LOC
server/mqtt.go 153 22522404 4,758
Total 153 4,758

.NET Classes

  • MqttHandler — MQTT protocol handler (35 features)
  • MqttAccountSessionManager — per-account MQTT session tracking (26 features)
  • MqttSession — individual MQTT session state (15 features)
  • MqttJetStreamAdapter — bridges MQTT to JetStream (22 features)
  • MqttReader — MQTT packet reader (8 features)
  • MqttWriter — MQTT packet writer (5 features)
  • Various MQTT reload options

Test Files

Test File Tests Test IDs
server/mqtt_test.go 159 21702328
server/mqtt_ex_test_test.go 2 21682169
server/mqtt_ex_bench_test.go 1 2167
Total 162

Dependencies

  • Session 01 (Foundation Types)
  • Session 08 (Client Connection)
  • Session 09 (Server Core Part 1)
  • Session 11 (Accounts)
  • Session 17 (Store Interfaces)
  • Session 19 (JetStream Core)

.NET Target Location

  • dotnet/src/ZB.MOM.NatsNet.Server/Mqtt/

Notes

  • MQTT is a self-contained protocol layer — could potentially be a separate assembly
  • 159 MQTT tests cover connection, subscribe, publish, QoS levels, sessions, retained messages
  • MQTT ↔ JetStream bridging is the most complex part
  • Consider using System.IO.Pipelines for MQTT packet parsing