cfbda260fa
Three coupled fixes from the first manual test pass:
1. Stale signed cookie no longer 500s. `rooms.me()` now raises KeyError
when the participant row is gone (the previous code deref'd None and
threw TypeError, caught by quiz.js's catch-all as 'link expired').
`/api/session/{sid}/me` translates KeyError into 401 + delete_cookie,
so the client falls back to the join form cleanly.
Returning a JSONResponse directly because `raise HTTPException`
discards Response.delete_cookie mutations (FastAPI middleware
composes a fresh response on exception).
2. Reset is now a soft restart from the student's perspective. Before
closing each student WS in `RoomManager.reset`, the server now sends
a `{"type": "session_reset"}` message. The student SPA tears down
local state and re-runs boot(); /me returns 401 (now that the
participant is gone) and the join form renders without the user
having to manually reload. The WS close handler suppresses its
"Disconnected" screen during a reset to avoid a flash.
3. "You" highlight on the student leaderboard is now matched by id, not
by name. `RoomManager.leaderboard()` accepts an optional
`you_student_id` and stamps `is_you: true` on the matching entry only.
No other students' ids leak over the wire (we still don't include
`student_id` in the public top5 payload). quiz.js's renderBoard
prefers `r.is_you` when any row is marked, falling back to name match
for backward compatibility.
41/41 tests pass. Two new tests cover (a) the 401 + cookie-clear path
after reset and (b) `is_you` marking only the requesting student.
Live in-lecture quiz portal
FastAPI + WebSocket + SQLite quiz portal designed for ~40 students per class session. Single-process, in-memory room manager, vanilla HTML/JS front-end, Caddy in front for TLS.
Quick local run
python3 -m venv .venv
. .venv/bin/activate
pip install -e '.[dev]'
cp .env.example .env # edit QUIZ_SECRET_KEY + QUIZ_ADMIN_PASSWORD
uvicorn app.main:app --host 127.0.0.1 --port 8001 --reload
Open http://127.0.0.1:8001/admin/, log in, create a quiz pool from a
JSON pool file (see examples/pool_example.json for the schema), create
a session, and share the join URL.
VPS deploy (one-shot)
On a fresh Ubuntu 24.04 LTS root SSH:
curl -fsSL https://gitea.ahkhan.me/apps/quiz/raw/branch/master/deploy/bootstrap.sh | bash
The bootstrap:
- apt-installs Caddy + Python venv tooling
- Creates a
quizsystem user (no shell, no SSH) - Clones this repo to
/opt/quiz - Builds the venv and installs the app
- Generates
QUIZ_SECRET_KEY, prompts forQUIZ_ADMIN_PASSWORD - Drops the systemd unit and Caddyfile
- Starts both services
- Curl-checks
127.0.0.1:8001/healthz
After: quiz.ahkhan.me is live with auto-Let's-Encrypt cert. To override
the domain or repo URL, set DOMAIN= or REPO_URL= in the environment
before running the script.
Class-day workflow
- Provision Aliyun Intl HK ECS pay-as-you-go (
ecs.t6-c2m1.large, Ubuntu 24.04 LTS). - Point DNS A-record
quiz.ahkhan.meat the new IP. - SSH in as root, run the curl|bash one-liner above.
- Open
quiz.ahkhan.me/admin/, log in, upload the week's pool JSON, create a session. - Share the QR / join URL with the class.
- After class:
scp root@<ip>:/opt/quiz/quiz.db ./backups/quiz-YYYY-MM-DD.db - Destroy the instance.
Quiz pool files
Real pool JSON files contain answer keys and must not be committed
to this repo. .gitignore excludes examples/*_pool.json (only
examples/pool_example.json may be tracked). Author pools elsewhere
(e.g., your course-material directory) and upload at runtime via the
admin UI.
Tests
pytest -q
pytest --cov=app
For the WebSocket adversarial stress harness (Node.js + Playwright,
runs in a tmux loop), see tests/stress/README.md.
Spec
SPEC.md documents the locked v1.0 design (state machine, scoring,
identity flow, all WS message types).