Changelog

All notable changes to this project are documented in this file.

[v0.0.3-cetoddle] - 2026-02-20

Added

• -c CLI flag to configure concurrency (default 50)
• -mode CLI flag (goodbots | resolve)
• New tests for:
  • DNS server round-robin behavior
  • context timeout/cancellation handling
  • processing final input line without trailing newline
  • concurrent output line integrity

Changed

• Reused a single package-level DNS resolver (concurrency-safe)
• Replaced random resolver selection with deterministic atomic round-robin
• Added per-lookup 5s context timeouts for reverse and forward DNS calls
• Reworked output handling to channel-based single writer + buffered output
• Updated go.mod minimum Go version to 1.23.0
• README updated for new CLI flags and behavior

Fixed

• Last-line EOF handling bug (previously dropped final line without \n)
• Potential interleaving risk from concurrent writes to shared io.Writer

Refactor for readability and added unit tests

My first golang program.