natsnet/CLAUDE.md

CLAUDE.md

Project Summary

This project is porting the NATS server from Go to .NET 10 C#. The Go source (~130K LOC across 109 non-test files, 85 test files) is at golang/nats-server/. The porting process is tracked via an SQLite database (porting.db) and managed by two tools: a Go AST analyzer and a .NET PortTracker CLI.

Folder Layout

natsnet/
├── golang/nats-server/              # Go source (reference)
├── dotnet/                          # .NET ported version
│   ├── src/
│   │   ├── ZB.MOM.NatsNet.Server/          # Main server library
│   │   └── ZB.MOM.NatsNet.Server.Host/     # Host/entry point
│   └── tests/
│       ├── ZB.MOM.NatsNet.Server.Tests/              # Unit tests
│       └── ZB.MOM.NatsNet.Server.IntegrationTests/   # Integration tests
├── tools/
│   ├── go-analyzer/                 # Go AST analyzer (Phases 1-2)
│   └── NatsNet.PortTracker/         # .NET CLI tool (all phases)
├── docs/plans/phases/               # Phase instruction guides
├── reports/                         # Generated porting reports
├── porting.db                       # SQLite tracking database
├── porting-schema.sql               # Database schema
└── documentation_rules.md           # Documentation conventions

Tools

Go AST Analyzer

CGO_ENABLED=1 go build -o go-analyzer . && ./go-analyzer --source golang/nats-server --db porting.db --schema porting-schema.sql

.NET PortTracker CLI

dotnet run --project tools/NatsNet.PortTracker -- <command> --db porting.db

Phase Instructions

• Phase 1: Go Codebase Decomposition - docs/plans/phases/phase-1-decomposition.md
• Phase 2: Verification of Captured Items - docs/plans/phases/phase-2-verification.md
• Phase 3: Library Mapping - docs/plans/phases/phase-3-library-mapping.md
• Phase 4: .NET Solution Design - docs/plans/phases/phase-4-dotnet-design.md
• Phase 5: Mapping Verification - docs/plans/phases/phase-5-mapping-verification.md
• Phase 6: Initial Porting - docs/plans/phases/phase-6-porting.md
• Phase 7: Porting Verification - docs/plans/phases/phase-7-porting-verification.md

.NET Standards

All .NET code must follow the rules in docs/standards/dotnet-standards.md. Key points:

• .NET 10, C# latest
• Testing: xUnit 3, Shouldly, NSubstitute — do NOT use FluentAssertions or Moq
• Logging: Microsoft.Extensions.Logging with Serilog provider; use LogContext.PushProperty for contextual enrichment
• Naming: PascalCase for all public members; ZB.MOM.NatsNet.Server.[Module] namespace hierarchy

Using Codex via tmux-cli

Use tmux-cli to launch and interact with OpenAI Codex (ccc alias) in a separate tmux pane. This lets you delegate tasks to Codex without blocking your current session.

Do NOT use the Codex MCP server (mcp__codex__codex) for long-running commands. Use tmux-cli + ccc instead — it runs in a separate pane, won't time out, and lets you capture output when ready.

The ccc alias

ccc runs codex --dangerously-bypass-approvals-and-sandbox (with Node/nvm auto-setup). Use it for tasks you want Codex to handle autonomously.

Workflow

Always launch a shell pane first — if a command errors without a shell, the pane closes and output is lost:

# 1. Launch a shell (returns pane ID, e.g. "2")
tmux-cli launch "zsh"

# 2. Send a codex command to that pane
tmux-cli send 'ccc "your prompt here"' --pane=2

# 3. Wait for codex to finish (no output for N seconds = idle)
tmux-cli wait_idle --pane=2 --idle-time=10.0

# 4. Capture the output
tmux-cli capture --pane=2

# 5. Clean up when done
tmux-cli kill --pane=2

Key tmux-cli commands

Command	Purpose
tmux-cli launch "zsh"	Start a shell pane (do this FIRST)
tmux-cli send "cmd" --pane=N	Send text + Enter to pane N
tmux-cli send "text" --pane=N --enter=False	Send text without pressing Enter
tmux-cli send "text" --pane=N --delay-enter=0.5	Custom delay before Enter (default 1.5s)
tmux-cli wait_idle --pane=N --idle-time=3.0	Wait until pane has no output for N seconds
tmux-cli capture --pane=N	Capture current pane output
tmux-cli list_panes	List all panes (JSON with IDs and status)
tmux-cli kill --pane=N	Kill a pane (cannot kill your own)
tmux-cli interrupt --pane=N	Send Ctrl+C to a pane
tmux-cli escape --pane=N	Send Escape to a pane

Pane identifiers

• Just the pane number: 2 (current window)
• Full format: session:window.pane (e.g. myapp:1.2)

Tips

• Use wait_idle instead of polling with repeated capture calls
• Save the pane ID returned by launch for subsequent commands
• Use capture to check state before sending input
• For long-running Codex tasks, increase --idle-time (e.g. --idle-time=15.0)

Reports

• reports/current.md always has the latest porting status.
• reports/report_{commit_id}.md snapshots are generated on each commit via pre-commit hook.
• Run ./reports/generate-report.sh manually to regenerate.