55ecb1b396
Local API stress (lib.mjs / api_stress.mjs): - setupSession now does login -> /admin/api/reset and returns sid="main". Drops the dead /admin/api/quizzes + /admin/api/sessions calls left over from the multi-quiz codex era. - bootServer writes the fixture pool (STRESS_POOL by default) to a tmp file and passes QUIZ_POOL_PATH so the v1.2 server has a session at startup. - happyPath: drop the post-connect lobby_update wait (race with snapshot dispatch) and stop double-driving the lifecycle (next() already opens the next question, an explicit open() afterwards is a no-op). - cross_session: rewritten as "cookie not honored on a non-existent sid" since v1.2 hosts a single canonical session. Live accuracy stress (live_accuracy.mjs): - Per-student lobby-snapshot timeout (12s) with WS error/close rejection, so a stalled handshake no longer hangs Promise.all until the outer shell timeout (which produced the exit=124 cycles). - Open all student WSs in parallel (mirrors what real students do); the batch-of-8 throttle was masking the question we wanted answered. - Instructor WS open also bounded by a 15s race so any failure surfaces as actionable error text instead of a silent stall. Bootstrap (deploy/bootstrap.sh): - Stage 1 provisions a 2GB swap file (idempotent) with vm.swappiness=10. 1GB-RAM ECS instances OOM-kill uvicorn under WS-burst start-of-class pressure; swap absorbs the spike without affecting steady state. - Pool seeding prefers examples/demo10_pool.json over the 2-question example so a fresh deploy boots with a usable demo. Pool fixture (examples/demo10_pool.json): - 10-question generic-knowledge demo pool, gitignore exception added.
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).