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https://github.com/Horizontal42/netsleuth.git
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bc8482cc99
Stayed unprivileged on both platforms deliberately. Windows: echo_once() gained a df: bool param setting IP_FLAG_DF on the IP_OPTION_INFORMATION struct's Flags field (present but unused until now), and classify_status() learned IP_PACKET_TOO_BIG (11009) - the same unprivileged IcmpSendEcho2 API the rest of the ICMP tier already uses, no new capability needed. Unix deliberately does not hand-roll raw ICMP echo requests - unprivileged SOCK_DGRAM/IPPROTO_ICMP checksum and identifier handling varies enough across kernel versions that shipping it without a Linux/macOS box to verify on felt like the wrong risk to take. Shells out to system ping -M do -s <size> (Linux) / ping -D -s <size> (macOS/BSD) instead, the same subprocess-and-parse pattern traceroute.py's system tiers already use. Matches "frag"/"too long" loosely in the output rather than an exact phrase, since a locally-cached-PMTU failure and a genuine on-path ICMP response word themselves differently across ping implementations - same "parse by shape" principle traceparse.py already established. classify_pmtu() distinguishes a path that's just narrower (a frag-needed signal was seen - PMTUD is working, normal behind a VPN) from an actual blackhole (large packets vanish with no ICMP reply at all - the "SSH connects then hangs" symptom). path.pmtu_below_iface_mtu flags separately when the path MTU is narrower than the local NIC's own MTU, which is exactly what makes this class of problem invisible locally. Opt-in --pmtud, excluded from --full. Live-verified on Windows against real cloudflare.com/google.com - found the full 1500-byte MTU in 11 probes each, matching the expected binary-search depth, correct probe history in the JSON output. Part of plans/zesty-zooming-wilkinson.md (gitignored). |
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| .. | ||
| fixtures | ||
| conftest.py | ||
| test_alerting.py | ||
| test_bgp.py | ||
| test_bgp_path.py | ||
| test_captive_portal.py | ||
| test_cgnat_nat64.py | ||
| test_cli_formats.py | ||
| test_compare.py | ||
| test_config.py | ||
| test_dns_advanced.py | ||
| test_dns_leak.py | ||
| test_dnsbl_decode.py | ||
| test_dpi_check.py | ||
| test_ecmp.py | ||
| test_exporter.py | ||
| test_exporter_l7.py | ||
| test_history.py | ||
| test_hop_asn.py | ||
| test_icmp_win_parse.py | ||
| test_icmp_win_trace.py | ||
| test_iface.py | ||
| test_interpret.py | ||
| test_interpret_l7.py | ||
| test_ip_geo_normalize.py | ||
| test_metrics.py | ||
| test_models.py | ||
| test_netinfo.py | ||
| test_orchestration.py | ||
| test_pmtud.py | ||
| test_prefix_benchmark.py | ||
| test_prober_stats.py | ||
| test_reputation.py | ||
| test_speed_cloudflare.py | ||
| test_speed_fastcom.py | ||
| test_speed_math.py | ||
| test_stats.py | ||
| test_tls_rtt.py | ||
| test_traceparse.py | ||
| test_traceroute_cascade.py | ||
| test_trend.py | ||
| test_watch.py | ||