A service worker would work fine; the connection would be instantiated from the ...

esprehn · on March 19, 2024

That doesn't work because browsers have duration limits on ServiceWorkers:

Also unfortunately Chrome doesn't keep SharedWorker alive after a navigation (Firefox and Safari do):

Hopefully Chrome will fix this eventually, it really makes it hard to build performant MPAs.

jedschmidt · on March 19, 2024

In my experience, as long as a controlled window is communicating with the SW, the connection will remain alive.