Bug 295887 – (iOS) getUserMedia() incorrectly emit 'devicechange' listener

• Status: RESOLVED
• Resolution: DUPLICATE
• Component: New Bugs

[Ronan Chi]

When I test getUserMedia() API in iOS, it incorrectly emit 'devicechange' listener.
And I call getUserMedia() again in my web app, it will cause <strong>infinite</strong> 'devicechange' listener loop.
It's ok in Chrome or PC Browser.

Online Link: https://bug.qer.im/ios-getUserMedia-incorrectly-emit-devicechange-listener/index.html

```js
navigator.mediaDevices.addEventListener('devicechange', () => {
  requestDevice();
});
async function requestDevice() {
  log('log', 'getUserMedia');
  const stream = await navigator.mediaDevices.getUserMedia({ audio: true });
  stream.getTracks().forEach(track => {
    track.stop();
  });
}
requestDevice();
```

[Ronan Chi]

*** This bug has been marked as a duplicate of bug 295888 ***