Manual Web Service

Core Idea

A web service is a process listening for network requests.

Practice Alone

Compute your course personal service port, run a local server, fetch it with curl, then stop it and observe failure.

PORT="$((10000 + $(id -u)))"
python3 -m http.server "$PORT" --bind 127.0.0.1
curl -I "http://127.0.0.1:$PORT/"

The manual server keeps the port busy while it runs. Stop it before starting a systemd service on the same port.

The public service URL has this shape:

https://username.lf2607.kolamayermakers.org/

Caddy can only make that URL work when your backend process is listening on the expected local port.

Done When

You can explain why a process must be running for the second URL to work.

Docs Pointers

• Read python3 http.server, curl, sockets, and platform reference.