samiandClaude Sonnet 5 79c29b47e8 core: finish the hostile-mode matrix -- 8 remaining end-to-end cases
Was 7/16 of tools/testserver/README.md's mode table covered by
engine_test.cpp. Adds the rest:

- engine_expiring_signed_url_recovers_via_refresh_url: an expired signed
  URL 403s, the engine asks (paused, decision_calls >= 1) rather than
  failing terminally, and DownloadHandle::refresh_url() with a freshly
  signed URL completes it -- exercises both do_refresh_url() fixes and
  the probe-level referrer retry's second-403 path from the previous
  commit.
- engine_403_without_referer_retries_with_origin: no spec.referrer set,
  the automatic single retry (previous commit) recovers with zero
  decisions asked.
- engine_redirect_chain_follows_to_completion: 5 hops of a plain 302.
  No core-side change needed -- documents that CURLOPT_FOLLOWLOCATION/
  MAXREDIRS (already on, RequestOptions::follow_redirects) cover both
  the probe's and every worker's own request, not just one of the two.
- engine_slow_loris_stall_timeout_fires: proves curl's stall detector
  (CURLOPT_LOW_SPEED_LIMIT/_TIME, download_task.cpp's hardcoded 1024 B/s
  for 30s) actually fires rather than hanging. Needed a real fix, not
  just a test: every other test in this file relies on TestServer's
  short 1s loris dribble to keep runtime down, but 1s of trickle
  followed by full-speed streaming never accumulates curl's required 30
  CONSECUTIVE seconds under the floor, so it would never actually abort
  -- a test built on the default dribble would pass by the download
  merely finishing a bit late, not by observing the stall timeout fire.
  testserver_fixture.hpp's TestServer gained an explicit-loris-seconds
  constructor (default ctor unchanged, still 1s) so this one test can
  ask for a dribble (40s) that genuinely outlasts the threshold.
- engine_401_digest_then_provide_auth_completes: same shape as the
  existing 401-basic test: http_client.cpp already asks libcurl for
  CURLAUTH_ANY regardless of net::AuthScheme, so this needed no core
  change -- it passed on the first run and is here to prove that's true
  end-to-end, not just at the http_client unit level.
- engine_chunked_no_length_completes_single_segment: Transfer-Encoding:
  chunked, no Content-Length anywhere (including HEAD). No core change
  needed -- takes the same size-agnostic "unknown size, one plain-GET
  segment" path as the existing no-range test.
- utf8/legacy-content-disposition: already covered end-to-end by
  probe_reads_utf8_content_disposition and
  probe_reads_legacy_content_disposition in probe_test.cpp (probe-level,
  as these modes only affect the initial request) -- verified passing,
  no new test needed.

All 20 engine_test.cpp cases and all 10 probe_test.cpp cases pass. Every
testserver.py spawned while writing and running this was reaped by
TestServer's destructor; verified no stragglers with `ps aux` after each
run.

Co-Authored-By: Claude Sonnet 5 <[email protected]>
Claude-Session: https://claude.ai/code/session_01Q3QrF7rCt21bkAjt9BCDFQ
2026-09-12 21:34:24 +04:00
2026-09-12 11:05:07 +04:00

Velox Download Manager (VDM)

An IDM-class download manager for Ubuntu 26.04 LTS: multi-segment accelerated HTTP(S) downloading, resume, categories and automatic file distribution, queues and scheduler, speed limiter, a Firefox extension that captures downloads automatically, and clipboard link capture.

Name is a placeholder. Binaries are veloxd, velox-gui, velox, velox-nmhost. Rename before first release if you want something else — do it in M0, never later.


Status

Phase M0 — scaffolding. No implementation code exists yet. This repository currently contains the architecture, the wire contract, the roadmap, and one brief per build lane so that several agents can work in parallel without colliding.

Start here:

Document What it answers
docs/01-architecture.md Process model, why four binaries, framework choices and why
docs/02-roadmap.md Milestones M0M7, what runs in parallel, exit gates
docs/03-gui-spec.md IDM-parity UI: every window, dialog, column, menu
docs/04-engine-design.md Segmentation, resume, buffers, rate limiting, disk I/O
docs/05-extension-spec.md Firefox capture, transports, pairing, media grabber
docs/06-risks-and-spikes.md Snap Firefox, Wayland clipboard, and the other landmines
docs/07-packaging.md .deb/PPA, Flatpak, AMO signing, install layout
contracts/README.md The interface. Both sides build against this
CLAUDE.md Rules of engagement for agents working in this repo

Per-lane briefs live in docs/agents/ — one per agent, each with an owned directory list, a definition of done, and the files it must never touch. To dispatch the agents, use docs/agents/PROMPTS.md — six copy-paste prompts plus the worktree commands and the wave order.


Architecture in one picture

  ┌────────────────────┐   native messaging (stdio JSON)   ┌──────────────┐
  │  Firefox extension │◄─────────────  or  ──────────────►│ velox-nmhost │
  │       (MV3, TS)    │   loopback WS 127.0.0.1 + token   └──────┬───────┘
  └────────────────────┘                                          │
                                                                  │
  ┌────────────────────┐                                          ▼
  │  velox-gui (Qt 6)  │◄──── JSON-RPC 2.0 over Unix socket ──► ┌─────────────┐
  └────────────────────┘      $XDG_RUNTIME_DIR/velox/velox.sock │   veloxd    │
                                                                │  (daemon)   │
  ┌────────────────────┐                                        │             │
  │   velox (CLI)      │◄───────────────────────────────────────┤ libveloxcore│
  └────────────────────┘                                        └──────┬──────┘
                                                                       │
                                                              SQLite + sparse files

The daemon owns all state and all sockets. The GUI is a view — closing it does not stop a download. The extension never touches the disk; it hands URL + headers + cookies to the daemon and gets a task id back.


Repository layout

vdm/
├── contracts/          ⭐ Wire contract: JSON Schema, fixtures, codegen. Frozen per version.
├── core/               C++23  libveloxcore — engine. No UI, no RPC, no SQL.
├── daemon/             C++23  veloxd — RPC server, scheduler, queues, SQLite store.
├── gui/                C++23  velox-gui — Qt 6 Widgets, IDM-parity UI.
├── cli/                C++23  velox — scriptable client.
├── nmhost/             C++23  velox-nmhost — Firefox native-messaging bridge (thin pipe).
├── extension/          TS     Firefox MV3 WebExtension.
├── tools/
│   ├── mockd/          TS mock daemon — lets GUI + extension work before veloxd exists.
│   ├── testserver/     Deliberately hostile HTTP server (no Range, flaky, redirects, auth).
│   ├── bench/          Throughput and CPU benchmarks.
│   └── fuzz/           libFuzzer targets for parsers.
├── tests/
│   ├── conformance/    Protocol suite. Every lane must pass it. Gate for merging.
│   ├── integration/    veloxd + testserver.
│   └── e2e/            Playwright: real Firefox + real daemon + real file on disk.
├── packaging/          debian/, flatpak/, appimage/, native-host manifests.
└── docs/               Everything above, plus adr/ and agents/.

Toolchain bootstrap

Surveyed on this machine 2026-09-09 — most of it is already installed:

Present Version
git · cmake · ninja · g++ · gdb 2.53.0 · 4.2.3 · — · 15.2.0 (C++23 ready)
qt6-base-dev · qt6-tools-dev · qt6-tools-dev-tools
libcurl4-openssl-dev · libsqlite3-dev · nlohmann-json3-dev · libssl-dev
libavformat-dev · libavcodec-dev · ffmpeg
clang-format · clang-tidy · python3 · pkg-config
python3-jsonschema · python3-referencing (conformance static runner)

Only these four are missing:

sudo apt update && sudo apt install -y \
  qt6-svg-dev \       # GUI: SVG icon rendering
  libsecret-1-dev \   # DAEMON: Secret Service for site logins
  nodejs npm \        # EXT + PROTO: extension build, mockd, conformance runner
  clang               # optional: libFuzzer targets in M7

Node in the 26.04 archive may lag; if the extension toolchain needs 22+, use nvm.

Verify with cmake --preset dev && cmake --build --preset dev once lane CORE lands its first target. Note CMake 4.2.3 is installed — newer than the 3.28 floor in CMakeLists.txt, and it hard-errors on cmake_minimum_required below 3.5, so no dependency may ship a pre-3.5 CMake file.

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a download manager for ubuntu
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