signal-desktop/ts/util/isMockServer.ts

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// Copyright 2024 Signal Messenger, LLC
// SPDX-License-Identifier: AGPL-3.0-only
export function isMockServer(
serverUrl = window.SignalContext.config.serverUrl
): boolean {
try {
const url = new URL(serverUrl);
return (
url.hostname === 'localhost' ||
url.hostname === '127.0.0.1' ||
url.hostname === '[::1]' // IPv6 loopback address
);
} catch (e) {
return false;
}
}