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AJ ONeal
bea4c3de0a
IPv4 host + CIDR membership testing backed by sorted /32 binary search and a linear scan of CIDR ranges. CSV/text loader with bounded reads (maxBytes is required so callers pick a limit appropriate to their input source — 1 KB allowlists through 100+ MB threat feeds). Returns errors for unparseable IPs so callers can decide fail-open vs fail-closed; partial cohorts are returned alongside parse errors.
golib
Sometimes a little copying, sometimes a little dependency. Too small for their own repos.
The default branch is dev, but the stable, versioned tags are based on main.
Also, my Go Cheatsheet: