# Changelog

All completed features are logged here in reverse-chronological order.

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## 2026-07-01 00:08 — Per-phase breakdown (Go, Step 2)

- Instrumented requests with `net/http/httptrace.ClientTrace`
- DNS lookup, TCP connect, TLS handshake, Server/TTFB, Transfer, Total phases
- TLS row omitted automatically for plain `http://` URLs
- Aligned text output with separator before Total

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## 2026-07-01 00:08 — Simple total latency (Go, Step 1)

- `probe.Measure` performs an HTTP GET and records wall-clock total time
- `main.go` prints URL, HTTP status code, and total duration for each URL
- Exits with code 1 if any URL fails
- Multiple URLs accepted as positional arguments

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## 2026-07-01 00:08 — Project scaffold (Go, Step 0)

- Created project structure: `go/`, `python/`, `docs/plans/`, `docs/usage/`
- Initialised Go module `latprobe` (`go/go.mod`)
- Minimal `go/main.go` that prints usage and exits cleanly when no URL is given
- Stub `go/internal/probe/probe.go` defining the `Result` type and `Measure` signature
- Foundation files: `README.md`, `CLAUDE.md`, `CHANGELOG.md`
- Saved initial plan to `docs/plans/2026-07-01-00-08-go-latency-tool.md`