Works best on Android?

[beaufortfrancois]

In https://github.com/pdjstone/cloudpets-web-bluetooth/#cloudpets-web-bluetoooth-demo, you say it works best on Android? Can you tell us why?

Thanks in advance, Francois.

Re: audio issue, once https://codereview.chromium.org/2707823002/ is pushed, it should be solved. See https://bugs.chromium.org/p/chromium/issues/detail?id=647673&desc=2#c10

[pdjstone]

It's actually more to do with the fact that I've only tested it on Android and a Chromebook, and it seems to work best on Android. I've not tried it out on Windows, and Chrome on Linux doesn't seem to support Web Bluetooth (at least, not with the version of BlueZ that ships with Ubuntu 16.04)

[beaufortfrancois]

Which issues did you face on the chromebook? I'm asking because I use one on a daily basis and it works fine for me.

Windows is not yet supported. Linux is still behind a flag and as you've said, you need recent version of BlueZ.

[pdjstone]

We were running into some issues on the Chromebook with getting 'GATT operation in progress' errors which could only be resolved by rebooting it (rebooting the toy and disabling/reenabling Bluetooth on the Chromebook didn't seem to sort it). We're using an Acer C810.

Also I had to work around https://github.com/WebBluetoothCG/web-bluetooth/issues/188 when sending audio to the toy (for both ChromeOS and Android). Currently the code waits a few ms after sending each chunk of data, but this means we're either sending slower than is possible, or getting GATT errors on certain hardware combinations I've not tested.

[beaufortfrancois]

@pdjstone Do you mind filing a bug at https://bugs.chromium.org/p/chromium/issues/entry?components=Blink%3EBluetooth regarding the "GATT operation in progress" errors ?

Is this how I could reproduce the issue?

    await chars.audio_send.writeValue(bytes);
    if (remaining_data - len > 0) {
-     setTimeout(sendNextChunk, 8);
+     sendNextChunk();
      return true;

[pdjstone]

We kept getting the GATT errors while recording our video for the blog at the last minute. I'm totally unable to reproduce it today (even if I change the setTimeout to requestAnimationFrame). I'm going to put it down to demo gremlins.

[pdjstone]

I've updated Readme to suggest either Android or Chrome OS