@needle-tools/engine/src/engine/engine_networking_utils.ts

Needle Engine is a web-based runtime for 3D apps. It runs on your machine for development with great integrations into editors like Unity or Blender - and can be deployed onto any device! It is flexible, extensible and networking and XR are built-in.

const localNetworkResults = new Map<string, boolean>();

export function isLocalNetwork(hostname = globalThis.location?.hostname) {
    if (localNetworkResults.has(hostname)) return localNetworkResults.get(hostname)!;
    const isLocalNetwork = /(\d{1,3}\.\d{1,3}\.\d{1,3}\.\d{1,3})|localhost/.test(hostname);
    localNetworkResults.set(hostname, isLocalNetwork);
    if (isLocalNetwork === true) return true;
    return false;
}

export function isHostedOnGlitch() {
    return window.location.hostname.includes("glitch.me");
}

// const testUrls = [
//     "192.254.384.122",
//     "my-glitch-page.glitch.me",
//     "a4d35231.my-url.dev"
// ]
// for (let url of testUrls)
//     console.log("Testing url: " + url, isLocalNetwork(url));