88b1391ef0
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.
50 lines
1.5 KiB
Markdown
50 lines
1.5 KiB
Markdown
# Session 08: Client Connection
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## Summary
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The client connection handler — manages individual client TCP connections, message processing, subscription management, and client lifecycle. The largest single class in the server.
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## Scope
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| Go File | Features | Feature IDs | Go LOC |
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|---------|----------|-------------|--------|
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| server/client.go | 185 | 387–571 | 5,680 |
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| server/client_proxyproto.go | 10 | 572–581 | 273 |
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| **Total** | **195** | | **5,953** |
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## .NET Classes
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- `ClientConnection` — client state, read/write loops, publish, subscribe, unsubscribe
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- `ClientFlag` — client state flags
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- `ClientInfo` — client metadata
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- `ProxyProtocolAddress` — PROXY protocol v1/v2 parsing
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## Test Files
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| Test File | Tests | Test IDs |
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|-----------|-------|----------|
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| server/client_test.go | 82 | 182–263 |
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| server/client_proxyproto_test.go | 23 | 159–181 |
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| server/closed_conns_test.go | 7 | 264–270 |
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| server/ping_test.go | 1 | 2615 |
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| **Total** | **113** | |
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## Dependencies
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- Session 01 (Foundation Types)
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- Session 02 (Utilities — queues)
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- Session 03 (Configuration — ServerOptions)
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- Session 05 (Subscription Index)
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- Session 07 (Protocol Parser)
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## .NET Target Location
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- `dotnet/src/ZB.MOM.NatsNet.Server/ClientConnection.cs`
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## Notes
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- This is the core networking class — every connected client has one
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- Heavy use of `sync.Mutex` in Go → consider `lock` or `SemaphoreSlim`
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- Write coalescing and flush logic is performance-critical
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- May need partial class split: `ClientConnection.Read.cs`, `ClientConnection.Write.cs`, etc.
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