CODEWITHSUNDEEP
firefoxwebsocketfirefox-addoncontent-script
Peasant Lord
Peasant Lord

Reputation: 11

Content script can't open a WebSocket connection in Firefox

Dev tools of the site, dev tools of the service worker and background.js can open a websocket connection perfectly fine. The content scripts however, will trigger onerror, then onclose immediately. I am using Manifest 2, with permission to <all_urls>, content script matching the website correctly and onclose code is 1006.

I am not receiving any error message. Quite a simple code;

const socket = new WebSocket("wss://my.website.com/ws/");
socket.addEventListener("error", (e) => { console.log("Error:", e); });
socket.addEventListener("close", (e) => { console.log("Closed", e); });

This only happens in Firefox and mobile version of it. Chrome, Opera, Kiwi browser and some others don't have this issue, they use Manifest 3.

Edit: I tested Manifest v3 on Firefox and it fixes the problem. But it's only supported in latest browser versions. I would like to keep using Manifest v2 for some time.

Upvotes: 1

Views: 96

Answers (0)

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