Electron Web Bluetooth API requestDevice() Error

Question

I'm trying to develop an application which communicates with Bluetooth Low Energy Devices. I established a working "website" with the Web Bluetooth API. Everything works fine, so I used the Electron framework, to build an application.

The issue is known - if you start navigator.bluetooth.requestDevice(), you get this error message: User cancelled the requestDevice() chooser..

This causes due to the missing device chooser in Chromium. There are several topics about workarounds I found, but no examples. This is my first Electron project. Maybe somebody solved this problem and can give me a hint :-)

Answer 1

Here is a code sample that will just return the first device instead of having to implement a device chooser:

  mainWindow.webContents.on('select-bluetooth-device', (event, deviceList, callback) => {
    event.preventDefault();
    console.log('Device list:', deviceList);
    let result = deviceList[0];
    if (!result) {
      callback('');
    } else {
      callback(result.deviceId);
    }
  });

Source: https://electronjs.org/docs/api/web-contents#event-select-bluetooth-device