Native application not sending the Hotwire user agent due to Service Worker

[jean-francois-labbe]

I'm writing this down here, in hope it helps someone.
I've spent some time to understand why would a bridge component not work on an Android Native application.

If you use a Service Worker and it intercepts your queries, something like:

function onFetch(event) {
  event.respondWith(fetch(event.request))
}

self.addEventListener("fetch", onFetch)

There are different strategies, but if your Service Worker performs a fetch(event.request), then it is using the default browser user agent and not the HotwireNative one (the one with bridge components).

This is due to a bug in chromium https://issues.chromium.org/issues/40236995