How to disable Service worker for specific resource?

I'm having a API endpoint that returns text/event-stream and there's a problem with firefox browser. When I hard-reload the app it forced API to fetch from network directly and it creates and maintains the SSE. but when I reload, the request goes through the service worker and for some reason, when it's through SW, after exactly 30seconds it drops the connection saying NS_BINDING_ABORTED.

• There's no reverse-proxy, I'm testing locally.
• I have headers on response:

	w.Header().Set("Content-Type", "text/event-stream")
	w.Header().Set("Cache-Control", "no-store, no-cache, must-revalidate, proxy-revalidate")
	w.Header().Set("Pragma", "no-cache")
	w.Header().Set("Expires", "0")
	w.Header().Set("X-Accel-Buffering", "no")
	w.Header().Set("Connection", "keep-alive")
	w.Header().Set("X-Content-Type-Options", "nosniff")

• I have request headers:

	req.Header.Set("Cache-Control", "no-store, no-cache")
	req.Header.Set("Pragma", "no-cache")

• I'm flushing response every 10 seconds
• I tried adding query parameters to the URL

and many other things that didn't help at all.

Any suggestion?