Offline mode interferences

[davidoskky]

Hello, I have Selfoss 2.19 installed on a remote server which I use from time to time, I don't remember ever activating offline mode but it could be.
On my computer, I sometimes use a jupyter notebook; in the notebook console I repeatedly get this message over time:

404 GET /selfoss-sw-offline.js (127.0.0.1) 2.250000ms referer=None

The jupyter notebook is running on port 8888 and if I connect to localhost:8888 when the service is not running, I get the page

selfoss is still loading, please wait.

If I connect to other ports this does not happen.
I have not installed selfoss locally, nor do I have any other local webserver.

[jtojnar]

That is really weird – we are just doing a standard ServiceWorker registration:

selfoss/assets/js/selfoss-base.js

Line 224 in 13871d7

navigator.serviceWorker.register(new URL('../selfoss-sw-offline.js', import.meta.url), { type: 'module' })

and since 2.19, we are only registering it if user explicitly enables offline mode:

selfoss/assets/js/selfoss-base.js

Lines 90 to 92 in 3858ad4

	if (selfoss.db.enableOffline.value) {
	selfoss.setupServiceWorker();
	}

Maybe it is something from older version of selfoss that got stuck around?

Try manually unregistering it in about:serviceworkers (in Firefox) or chrome://serviceworker-internals/ (in Chromium).

[davidoskky]

Nevermind, I had a ServiceWorker registered on localhost:8888 for selfoss.
I'm not really sure how it got there, but enabling offline mode now appears to correctly set the ServiceWorker to the domain where I have selfoss.