(function() {
'use strict';

// Prevent WebRTC from leaking local IP addresses
const OriginalRTC = window.RTCPeerConnection || window.webkitRTCPeerConnection || window.mozRTCPeerConnection;
if (!OriginalRTC) return;

window.RTCPeerConnection = function(config, constraints) {
    if (config && config.iceServers) {
        config.iceServers = config.iceServers.filter(server => {
            const urls = Array.isArray(server.urls) ? server.urls : [server.urls || server.url];
            return !urls.some(u => u && u.toString().startsWith('stun:'));
        });
    }
    return new OriginalRTC(config, constraints);
};

window.RTCPeerConnection.prototype = OriginalRTC.prototype;
Object.setPrototypeOf(window.RTCPeerConnection, OriginalRTC);

if (window.webkitRTCPeerConnection) {
    window.webkitRTCPeerConnection = window.RTCPeerConnection;
}
})();