mrambossekandClaude Opus 5
9ee7d554a6
Four passive collectors join long mode: SSDP (passive NOTIFY plus paced M-SEARCH from the capture socket, so unicast replies land in the same capture), LLMNR, NetBIOS-NS and WS-Discovery. All are periodic and sparse by nature, which is exactly why they belong to a window rather than a probe - a thirty-second run mostly hears silence and would report an empty network as confidently as a quiet one. NetBIOS reports unsupported on the app tier and says why: UDP 137 is privileged. The decoder and evidence shape are tested and waiting for the Shizuku tier; a recorded reason beats a missing test. Silence without a multicast lock or a group join is PARTIAL, never OK - that case is a fact about this app, not about the network. Hostnames, banners and device UUIDs are classified in core-privacy so the anonymizer treats them like every other identifier rather than letting a neighbour's device model ride out in an upload. No active WSD Probe and no NBSTAT sweep: the app listens to what a network broadcasts, it does not announce itself to strangers or interrogate its neighbours. Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
Echolot app
The production Android client (spec). Native Kotlin + Jetpack Compose. Multi-module; built bottom-up from a verifiable protocol spine.
Modules
| Module | Type | Status |
|---|---|---|
core-protocol |
pure Kotlin/JVM | done — client half of probe-protocol.md, verified live against the server |
core-measurement |
pure Kotlin/JVM | planned — measurement-schema.md types |
core-probe |
Android lib | planned — app-tier probes, ported from echolot-prober |
core-shizuku |
Android lib | planned — dual-path executor (UserService + newProcess fallback) |
app |
Android app | planned — Compose UI |
core-protocol is deliberately Android-free so it builds and unit-tests on any JDK (no Android
SDK) and can run integration tests against a live server.
core-protocol
Implements the control plane (SPKI-pinned enrollment/profile/sessions via HttpsURLConnection —
Android-API-1 compatible, hostname verification off because trust is the pin), the HKDF-SHA256
session-key schedule, and the binary ELT1 UDP data plane (HMAC gate, ECHO + observation block,
MTU probe) — byte-compatible with the Go server.
./gradlew :core-protocol:test # unit tests (crypto vectors, wire round-trip)
scripts/test-fmr.sh # live end-to-end test against the deployed server
test-fmr.sh mints an enrollment token over SSH, enrolls via the public control plane, computes
the SPKI pin from the served cert, and runs LiveServerTest — proving the client speaks the wire
protocol to the real server (enroll → profile → session → echo+observation → MTU → observations).
The live test self-skips when ECHOLOT_LIVE_* env vars are absent, so unit runs and CI stay green
offline.