mrambossekandClaude Opus 5
6ddf013dfe
- Code: GPL-3.0-or-later (LICENSE, SPDX headers on all .kt/.aidl). Specs in docs/: CC-BY-4.0 (docs/LICENSE). Rationale in build-status.md; server decided GPL (not AGPL). - Root README for the public repo. - web/: Cloudflare Worker site for echo-lot.app. /apk resolves the newest APK from the Gitea latest-release API at request time (edge-cached 5 min), so tagging a release is the only publish step. /fdroid, /source, and a manual DOWNLOAD_URL fallback are wrangler vars. - .gitea/workflows/release.yml: tag-driven (v*) signed semver APK builds for the future production app in echolot-app/. Parked; the prober is deliberately not CI-built. - Fix UserService.kt: drop the explicit secondary constructor that conflicted with the implicit primary (never compiled before — first local build caught it). Prober now builds: :app:assembleDebug OK. Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
258 lines
12 KiB
HTML
258 lines
12 KiB
HTML
<!doctype html>
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<!-- SPDX-FileCopyrightText: 2026 Echolot contributors
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SPDX-License-Identifier: GPL-3.0-or-later -->
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<html lang="en">
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<head>
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<meta charset="utf-8">
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<meta name="viewport" content="width=device-width, initial-scale=1">
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<title>Echolot — depth soundings for your local network</title>
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<meta name="description" content="Free Android app for detecting and debugging local network issues: rogue DHCP, broken IPv6 RAs, MTU black holes, multicast loss, lying DNS. No root required.">
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<meta property="og:title" content="Echolot">
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<meta property="og:description" content="Depth soundings for your local network. F/OSS Android network diagnostics — no root required.">
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<meta property="og:url" content="https://echo-lot.app/">
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<link rel="icon" href="data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 32 32'%3E%3Crect width='32' height='32' fill='%23071A29'/%3E%3Cg fill='none' stroke='%23FFB454' stroke-width='2'%3E%3Ccircle cx='16' cy='16' r='3' fill='%23FFB454' stroke='none'/%3E%3Cpath d='M16 6a10 10 0 0 1 10 10'/%3E%3Cpath d='M16 1a15 15 0 0 1 15 15' opacity='.5'/%3E%3C/g%3E%3C/svg%3E">
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<style>
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:root {
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--depth-0: #0B2437; /* surface */
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* { box-sizing: border-box; margin: 0; }
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html { scroll-behavior: smooth; }
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body {
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font-family: var(--sans);
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color: var(--foam);
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line-height: 1.6;
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-webkit-font-smoothing: antialiased;
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}
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a { color: var(--ping); text-decoration-thickness: 1px; text-underline-offset: 3px; }
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a:hover { text-decoration-thickness: 2px; }
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.col { max-width: 46rem; margin: 0 auto; padding: 0 1.25rem; }
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/* Depth ruler: fixed left margin scale, desktop only. Marks are set per-section
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by scroll position purely decoratively — it is a ruler, not navigation. */
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.ruler {
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position: fixed; top: 0; bottom: 0; left: 0; width: 3.5rem;
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.ruler span {
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position: absolute; right: .5rem; transform: translateY(-50%);
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}
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.ruler span::after {
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content: ""; position: absolute; right: -.55rem; top: 50%;
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width: .35rem; height: 1px; background: var(--slate);
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}
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header.hero { padding: 4.5rem 0 3rem; }
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.wordmark {
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text-transform: uppercase; color: var(--slate);
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h1 {
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.hero p.lede strong { color: var(--foam); font-weight: 600; }
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/* Echogram: the signature. A chart-recorder trace of ping RTTs; the sweep
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line is the sounder, the profile is the "seabed" the echoes draw. */
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figure.echogram {
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margin: 2.5rem 0 0; border: 1px solid var(--grid); border-radius: 4px;
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background:
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repeating-linear-gradient(to right, transparent 0 39px, var(--grid) 39px 40px),
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repeating-linear-gradient(to bottom, transparent 0 31px, var(--grid) 31px 32px),
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var(--depth-3);
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position: relative; overflow: hidden;
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}
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.echogram svg { display: block; width: 100%; height: auto; }
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.echogram figcaption {
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position: absolute; top: .5rem; left: .75rem;
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font-family: var(--mono); font-size: .65rem; color: var(--slate);
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}
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.sweep {
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position: absolute; top: 0; bottom: 0; width: 1px;
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background: var(--ping); opacity: .8;
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box-shadow: 0 0 8px var(--ping);
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animation: sweep 7s linear infinite;
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}
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@keyframes sweep { from { left: 0; } to { left: 100%; } }
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@media (prefers-reduced-motion: reduce) {
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.sweep { animation: none; left: 62%; }
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html { scroll-behavior: auto; }
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}
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section { padding: 3.5rem 0 0; }
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.eyebrow {
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font-family: var(--mono); font-size: .7rem; letter-spacing: .25em;
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text-transform: uppercase; color: var(--ping);
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}
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h2 { font-size: 1.35rem; font-weight: 650; margin: .5rem 0 1rem; letter-spacing: -.01em; }
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section > .col > p { color: var(--slate); max-width: 58ch; }
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section p + p { margin-top: .8rem; }
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section p strong { color: var(--foam); font-weight: 600; }
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/* Sounding table: what it actually measures — real content, mono, no icons */
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table.soundings {
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width: 100%; border-collapse: collapse; margin-top: 1.5rem;
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font-size: .9rem;
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}
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.soundings td {
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padding: .55rem .75rem .55rem 0; border-top: 1px solid var(--grid);
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vertical-align: top;
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}
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.soundings td:first-child {
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font-family: var(--mono); font-size: .8rem; white-space: nowrap;
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color: var(--foam); padding-right: 1.25rem;
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}
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.soundings td:last-child { color: var(--slate); }
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.tiers { display: flex; gap: .5rem; flex-wrap: wrap; margin-top: 1.25rem; }
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.tier {
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font-family: var(--mono); font-size: .75rem;
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border: 1px solid var(--grid); border-radius: 3px; padding: .35rem .6rem;
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color: var(--slate);
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}
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.tier b { color: var(--ok); font-weight: 600; }
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/* Install */
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.buttons { display: flex; gap: .75rem; flex-wrap: wrap; margin: 1.5rem 0 1rem; }
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.btn {
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display: inline-block; padding: .7rem 1.3rem; border-radius: 4px;
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font-weight: 600; text-decoration: none; font-size: .95rem;
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}
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.btn.primary { background: var(--ping); color: var(--depth-3); }
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.btn.primary:hover { filter: brightness(1.08); }
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.btn.ghost { border: 1px solid var(--grid); color: var(--foam); }
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.btn.ghost:hover { border-color: var(--slate); }
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.note {
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font-size: .85rem; color: var(--slate);
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border-left: 2px solid var(--ping); padding-left: .9rem; max-width: 52ch;
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}
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.checksum { font-family: var(--mono); font-size: .75rem; color: var(--slate); margin-top: 1rem; }
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footer {
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margin-top: 4.5rem; padding: 2rem 0 3rem;
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border-top: 1px solid var(--grid);
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font-size: .85rem; color: var(--slate);
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}
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footer .col { display: flex; gap: 1.5rem; flex-wrap: wrap; justify-content: space-between; }
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</style>
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</head>
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<body>
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<div class="ruler" aria-hidden="true">
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<span style="top:6%">0 m</span>
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<span style="top:28%">─ 20</span>
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<span style="top:50%">─ 40</span>
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<span style="top:72%">─ 60</span>
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<span style="top:94%">─ 80</span>
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</div>
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<header class="hero">
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<div class="col">
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<p class="wordmark"><b>●</b> echo·lot <span aria-hidden="true">/ˈɛçolo:t/ — echo sounder</span></p>
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<h1>Depth soundings for your local network.</h1>
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<p class="lede">An echo sounder maps the seabed by timing returns. <strong>Echolot</strong> does the
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same to your network: free Android diagnostics for the layer where things actually break —
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<strong>no root required</strong>. Built for people who know what a neighbor table is.</p>
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<figure class="echogram">
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<figcaption>trace · icmp.ping4 · rtt ms ↓ / t →</figcaption>
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<svg viewBox="0 0 720 190" role="img" aria-label="Chart-recorder style trace of ping round-trip times, drawn like a sonar seabed profile">
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<!-- echo returns: the profile -->
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<polyline fill="none" stroke="#FFB454" stroke-width="1.5" opacity=".9"
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points="0,138 40,136 80,139 120,135 160,137 200,141 240,138 260,120 280,96 300,88 320,94 340,118 360,134 400,136 440,133 480,158 500,171 520,168 540,150 560,139 600,137 640,140 680,136 720,138"/>
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<!-- second, fainter return (multipath) -->
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<polyline fill="none" stroke="#FFB454" stroke-width="1" opacity=".25"
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points="0,148 40,146 80,149 120,145 160,147 200,151 240,148 260,132 280,110 300,101 320,107 340,129 360,144 400,146 440,143 480,168 500,180 520,177 540,160 560,149 600,147 640,150 680,146 720,148"/>
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<!-- dropped probes -->
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<g fill="#8AA5B8" font-family="monospace" font-size="9">
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<text x="497" y="30">×</text><text x="507" y="30">×</text>
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<text x="288" y="30">▲ spike: wifi→cell handover</text>
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</g>
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</svg>
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<div class="sweep" aria-hidden="true"></div>
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</figure>
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</div>
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</header>
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<section id="what">
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<div class="col">
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<p class="eyebrow">What it sounds out</p>
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<h2>Signal bars lie. Timings don't.</h2>
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<p>Most wifi apps show you signal strength and call it a diagnosis. The failures that ruin
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home and office networks live deeper: a second DHCP server nobody admits to, IPv6 router
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advertisements gone wrong, an MTU black hole that only eats large packets, multicast dying
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quietly at the AP, a resolver answering differently than it should.</p>
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<table class="soundings">
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<tr><td>dhcp.rogue_detect</td><td>Who is answering DISCOVER — and is it more than one box?</td></tr>
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<tr><td>ipv6.ra_audit</td><td>Router advertisements: lifetimes, flags, prefixes that shouldn't be there</td></tr>
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<tr><td>mtu.blackhole</td><td>Path MTU probing — find the packet size where the network goes silent</td></tr>
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<tr><td>local.mdns_discover</td><td>Does multicast actually survive your AP? What's announcing itself?</td></tr>
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<tr><td>dns.canary</td><td>Compare answers against reference records — catch rewriting resolvers</td></tr>
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<tr><td>trace.errqueue</td><td>Traceroute without root, straight from the kernel error queue</td></tr>
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</table>
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<p style="margin-top:1rem">Every run separates <strong>what was observed</strong> from
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<strong>what it means</strong>, and exports as JSON — so the evidence survives the argument.</p>
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</div>
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</section>
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<section id="tiers">
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<div class="col">
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<p class="eyebrow">Privilege tiers</p>
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<h2>No root required. More access if you have it.</h2>
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<p>Everything above runs as a plain app. Pair once over wireless ADB with
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<a href="https://shizuku.rikka.app/">Shizuku</a> and Echolot additionally reads neighbor
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tables, RA-installed routes, and DHCP client logs — still no root. Every result records
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which tier produced it.</p>
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<div class="tiers">
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<span class="tier"><b>app</b> — no setup, the bulk of it</span>
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<span class="tier"><b>shizuku</b> — wireless ADB pairing, in v1</span>
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<span class="tier">root — future module</span>
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</div>
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</div>
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</section>
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<section id="install">
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<div class="col">
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<p class="eyebrow">Install</p>
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<h2>Get Echolot</h2>
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<div class="buttons">
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<a class="btn primary" href="/apk">Download APK</a>
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<a class="btn ghost" href="/fdroid">F-Droid</a>
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</div>
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<p class="note"><strong>Pre-release.</strong> The capability prober is running on real
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hardware; the production app is under construction. These links go live with the first
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release — until then they loop back here. No mailing list, no tracker: check back, or watch
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the <a href="/source">repository</a>.</p>
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<p class="checksum">releases will ship with sha256sums + a signing key you can pin</p>
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</div>
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</section>
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<footer>
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<div class="col">
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<span>GPL-3.0-or-later · protocol & schema docs CC-BY-4.0</span>
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<span><a href="/source">source</a> · no analytics, no cookies, no third-party requests</span>
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</div>
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</footer>
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</body>
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</html>
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