Web Bluetooth (Chrome Ubuntu) Scanning

[vicatcu]

Describe the bug I get a permission prompt when i initiate a Bluetooth scan using BleClient.requestLEScan but

To Reproduce Steps to reproduce the behavior: Do all the pre-requisite enablement of experimental features in chrome://flags as shown here:

Enable Bluetooth in the operating system settings and observe that scan results are apparent in the system dialog.

Set a breakpoint in Chrome Dev Tools in the callback function for:

BleClient.requestLEScan(
   {services: []}, 
   (result) =>  {
      console.log(result); // set breakpoint here
   }
)` 

... and observe that it never executes, despite the same code working fine on iOS and Android builds.

The following prompt appears in Chrome:

... but clicking "Allow" doesn't make a difference, and Chrome doesn't seem to "remember" that I clicked allow either - it asks every time.

Expected behavior Invoking a Bluetooth scan should cause the callback to fire in Web Bluetooth same as on iOS and Android. Allow dialog should not come up every time a scan is invoked?

Screenshots N/A

Plugin version:

• @capacitor-community/bluetooth-le: 3.1.4

Desktop (please complete the following information):

• OS: Ubuntu 22.04.5 LTS
• Browser: Google Chrome
• Version: 130.0.6723.69 (Official Build) (64-bit)

Additional context NodeJS : v18.20.2 npm : 10.5.0 OS : Linux 6.9 Angular: 16.2.9 @ionic/[email protected] @capacitor/cli: 5.7.5 @capacitor/core: 5.7.8

[pwespi]

Note that requestLEScan of Web Bluetooth is still experimental and has bugs. On the implementation status page Linux is not even listed as supported. Therefore I don't think there is anything that can be done about this in the plugin.

You could try to use navigator.bluetooth.requestLEScan directly and I suspect you would get the same results.

[maelp]

I think it's a buggy chrome implementation... if you copy the requestLEScan directly in the DevTools console it works for some reason, but when running from javascript code it doesn't work

[JooYoo]

I also have the same issue. Does it mean scanning Ble devices on the Web is not possible with this plugin? Since it's stuck on the "Block, Allow" page.

[JooYoo]

I think it's a buggy chrome implementation... if you copy the requestLEScan directly in the DevTools console it works for some reason, but when running from javascript code it doesn't work

You are right. I pasted

navigator.bluetooth.requestDevice({
  acceptAllDevices: true
}).then(device => {
  console.log('Found:', device);
});

In Chrome inspector console, it works as expected.