I am developping a content script which opens a websocket to our backend.
"permissions": {
"cross-domain-content": ["http://localhost:3000"]
}
This code allows me to request my backend through HTTP, but my websocket is still blocked by the content security policy. I tried several combinaisons and workaround to add ws://localhost:3000
to that list but nothing worked. Since this webpage makes no mention of websockets support, I start to wonder if there is a way do that.