Disable Live Connection

Disable live connection to Deezer which is used to sync things like the current playing track across devices. This for example, allows you to play on multiple devices simultaneously.

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// ==UserScript==
// @name        Disable Live Connection
// @description Disable live connection to Deezer which is used to sync things like the current playing track across devices. This for example, allows you to play on multiple devices simultaneously.
// @author      bertigert
// @version     1.0.0
// @icon        https://www.google.com/s2/favicons?sz=64&domain=deezer.com
// @namespace   Violentmonkey Scripts
// @match       https://www.deezer.com/us/*
// @grant       none
// run-at       document-start
// ==/UserScript==


(function() {
    "use strict";

    function debug(...args) {
        console.debug("[Disable Live Connection]", ...args);
    }
    function log(...args) {
        console.log("[Disable Live Connection]", ...args);
    }

    const original_websocket = window.WebSocket;

    const blocked_patterns = [
        /^wss?:\/\/live\.deezer\.com\/ws\/[0-9a-f]+\?version=[0-9]*$/,
    ];

    const hooked_websocket = function(url, protocols) {
        // debug("New WebSocket, URL:", url);
        const should_block = blocked_patterns.some(pattern => pattern.test(url));

        if (should_block) {
            debug(`Blocked WebSocket connection to: ${url}`);
            return {
                close: () => {},
                send: () => {},
                addEventListener: () => {},
                removeEventListener: () => {},
                readyState: 2, // this cannot be 3 since it tries to reconnect otherwise, any value other than 3 would work i think
                CONNECTING: 0,
                OPEN: 1,
                CLOSING: 2,
                CLOSED: 3
            };
        }

        return new original_websocket(url, protocols);
    };

    Object.setPrototypeOf(hooked_websocket, original_websocket);
    Object.getOwnPropertyNames(original_websocket).forEach(prop => {
        try {
            hooked_websocket[prop] = original_websocket[prop];
        } catch (e) {
        }
    });
    window.WebSocket = hooked_websocket;
})();