demo · v144

WebTransport LNA Classifier

Type a WebTransport URL — the page classifies the target address by RFC1918 / loopback / link-local rules and tells you whether Chrome 144 will trip the new Local Network Access permission prompt. Try a real connect attempt to see what your build does.

enter a URL and classify

the API

const wt = new WebTransport("https://192.168.1.10:4433/echo");
try {
  await wt.ready;
} catch (e) {
  // Chrome 144: NotAllowedError if LNA permission denied,
  // SecurityError if blocked outright.
}

see also