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Replace Printf.printf with print_endline for simple string output.
- Add err_invalid_cidr helper (E340)
- Rename get_client_ip→client_ip, client_ip→first_xff_ip, get_client_ip_string→client_ip_string (E325/E331)
- Rename test_get_ip_no_crash in fuzz (E320)
- Replace Printf.sprintf with Fmt.str in fuzz (E205)
- Add module doc and suite doc to fuzz_xff.mli (E400/E405)
- Fix private_ranges doc format (E410)
- Create fuzz.ml runner; update dune to use (name fuzz) (E718)
- Extract suite from test_xff.ml; add test.ml runner and test_xff.mli (E600)
Parse X-Forwarded-For headers to extract client IP addresses behind proxies. Supports trusted proxy validation using CIDR ranges to prevent IP spoofing. Implements de-facto X-Forwarded-For standard and aligns with RFC 7239.
opam install xff will install this library.
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