The page to test is available here:
https://cadesalaberry.github.io/web-bluetooth-broken-chrome-123and-up/
The issue has been reported here:
https://issues.chromium.org/issues/360888485
Note that the code does not use watchAdvertisement.
- Tested on a Chromebook 126
- Tested on a Macbook M2 Max (Version 14.5 (23F79))
- Enable ff
chrome://flags/#enable-web-bluetooth-new-permissions-backend - Enable ff
chrome://flags/#enable-experimental-web-platform-features
- Add the device with the "Add Blood Pressure Monitor" button
- Select it in the device picker
- Pairing should now be successful
- REFRESH THE PAGE
- Click on the "Listen for measures" button
- This should result in a
NetworkError: Bluetooth Device is no longer in range. - Start a measure on the blood pressure monitor
- Once the bluetooth icon is blinking on the device it means that it is trying to upload the results to a computer
- Click on the "Listen for measures" button
- You should get the following log:
globalAccountId : 1249353131
Found 2 authorized devices.
Connecting to 0810A0306F36F9 (TUSdb0vaZffDHjs11Z4zug==)...
"0810A0306F36F9" (TUSdb0vaZffDHjs11Z4zug==) was found, attempting connection...
Error connecting to 0810A0306F36F9: NetworkError: Bluetooth Device is no longer in range.
Connecting to 0810A0306F36F9 (TUSdb0vaZffDHjs11Z4zug==)...
"0810A0306F36F9" (TUSdb0vaZffDHjs11Z4zug==) was found, attempting connection...
❤️: REQUESTING_BPM_MEASURE
> BPM Notifications started
< "BPM Char Changed": a1 ab 0 9 0
❤️: RECEIVED_RANDOM
❤️: SENDING_VERIFICATION_CODE
❤️: SENDING_TIME_OFFSET
❤️: REQUEST_MEASUREMENT
> Start notifications for BPM
✅ Systolic: 113, Diastolic: 78, Pulsation: 67
❤️: SENDING_DISCONNECTION
❤️: MEASURE_ACQUIRED
Follow the instructions for the working flow on 122.
Once the page is refreshed, chrome is unable to connect back to the device. It always appear as no longer in range.
globalAccountId : 741820389
Found 2 authorized devices.
Connecting to 0810A0306F36F9 (TUSdb0vaZffDHjs11Z4zug==)...
"0810A0306F36F9" (TUSdb0vaZffDHjs11Z4zug==) was found, attempting connection...
Error connecting to 0810A0306F36F9: NetworkError: Bluetooth Device is no longer in range.
Connecting to 0810A0306F36F9 (TUSdb0vaZffDHjs11Z4zug==)...
"0810A0306F36F9" (TUSdb0vaZffDHjs11Z4zug==) was found, attempting connection...
Error connecting to 0810A0306F36F9: NetworkError: Bluetooth Device is no longer in range.
Connecting to 0810A0306F36F9 (TUSdb0vaZffDHjs11Z4zug==)...
"0810A0306F36F9" (TUSdb0vaZffDHjs11Z4zug==) was found, attempting connection...
Error connecting to 0810A0306F36F9: NetworkError: Bluetooth Device is no longer in range.
Connecting to 0810A0306F36F9 (TUSdb0vaZffDHjs11Z4zug==)...
"0810A0306F36F9" (TUSdb0vaZffDHjs11Z4zug==) was found, attempting connection...
Error connecting to 0810A0306F36F9: NetworkError: Bluetooth Device is no longer in range.
Connecting to 0810A0306F36F9 (TUSdb0vaZffDHjs11Z4zug==)...
"0810A0306F36F9" (TUSdb0vaZffDHjs11Z4zug==) was found, attempting connection...
Error connecting to 0810A0306F36F9: NetworkError: Bluetooth Device is no longer in range.
Connecting to 0810A0306F36F9 (TUSdb0vaZffDHjs11Z4zug==)...
"0810A0306F36F9" (TUSdb0vaZffDHjs11Z4zug==) was found, attempting connection...
Error connecting to 0810A0306F36F9: NetworkError: Bluetooth Device is no longer in range.
Connecting to 0810A0306F36F9 (TUSdb0vaZffDHjs11Z4zug==)...
"0810A0306F36F9" (TUSdb0vaZffDHjs11Z4zug==) was found, attempting connection...
Error connecting to 0810A0306F36F9: NetworkError: Bluetooth Device is no longer in range.
The crash happens when calling startNotifications()
globalAccountId : 4254967178
Found 2 authorized devices.
Prompting user for a new device...
> User picked 1810A0 (dgYlbPIgHaSl0kippgpq8g==)
>>>> CRASH <<<<
I tried after this issue was fixed: https://issues.chromium.org/issues/362116535 The crash does not happen anymore. However I still cannot get the data sent by the bluetooth device once the page is refreshed. Getting the data works before a page reload.
globalAccountId : 3428219340
Found 2 authorized devices.
Connecting to 1810A0 (hSgm1F2U85RusQqkXoN3pw==)...
"1810A0" (hSgm1F2U85RusQqkXoN3pw==) was found, attempting connection...
Error connecting to 1810A0: NetworkError: Bluetooth Device is no longer in range.
Connecting to 1810A0 (hSgm1F2U85RusQqkXoN3pw==)...
"1810A0" (hSgm1F2U85RusQqkXoN3pw==) was found, attempting connection...
Error connecting to 1810A0: NetworkError: Bluetooth Device is no longer in range.
Connecting to 1810A0 (hSgm1F2U85RusQqkXoN3pw==)...
"1810A0" (hSgm1F2U85RusQqkXoN3pw==) was found, attempting connection...
Error connecting to 1810A0: NetworkError: Bluetooth Device is no longer in range.
Connecting to 1810A0 (hSgm1F2U85RusQqkXoN3pw==)...
"1810A0" (hSgm1F2U85RusQqkXoN3pw==) was found, attempting connection...
Error connecting to 1810A0: NetworkError: Bluetooth Device is no longer in range.
Connecting to 1810A0 (hSgm1F2U85RusQqkXoN3pw==)...
"1810A0" (hSgm1F2U85RusQqkXoN3pw==) was found, attempting connection...
Error connecting to 1810A0: NetworkError: Bluetooth Device is no longer in range.
I tried the blood pressure monitor on a ASUS Chromebook C523N (board: coral) I had lying around.
Google Chrome 126.0.6478.222 (Build officiel) (64 bits)
Révision 803933f6b3177592370be766f36d7095a1903fd0-refs/branch-heads/6478@{#1853}
Plate-forme 15886.74.0 (Official Build) stable-channel coral
Version du micrologiciel Google_Coral.10068.113.0
ID de la personnalisation BABYTIGER
After clicking 5 times on "Listen for measures", all the "Connection attempt failed" are displayed at the same time.
globalAccountId : 4194637317
Found 1 authorized devices.
Connecting to 1810A0 (tO/HqaL76hQk3k/OJ1Mpbw==)...
"1810A0" (tO/HqaL76hQk3k/OJ1Mpbw==) was found, attempting connection...
Connecting to 1810A0 (tO/HqaL76hQk3k/OJ1Mpbw==)...
"1810A0" (tO/HqaL76hQk3k/OJ1Mpbw==) was found, attempting connection...
Connecting to 1810A0 (tO/HqaL76hQk3k/OJ1Mpbw==)...
"1810A0" (tO/HqaL76hQk3k/OJ1Mpbw==) was found, attempting connection...
Connecting to 1810A0 (tO/HqaL76hQk3k/OJ1Mpbw==)...
"1810A0" (tO/HqaL76hQk3k/OJ1Mpbw==) was found, attempting connection...
Connecting to 1810A0 (tO/HqaL76hQk3k/OJ1Mpbw==)...
"1810A0" (tO/HqaL76hQk3k/OJ1Mpbw==) was found, attempting connection...
Error connecting to 1810A0: NetworkError: Connection Error: .
Error connecting to 1810A0: NetworkError: Connection Error: Connection attempt failed.
Error connecting to 1810A0: NetworkError: Connection Error: Connection attempt failed.
Error connecting to 1810A0: NetworkError: Connection Error: Connection attempt failed.
Error connecting to 1810A0: NetworkError: Connection Error: Connection attempt failed.
globalAccountId : 3313465336
Found 1 authorized devices.
Connecting to 1810A0 (eCk8EaFEjWQdbbM0AhmsKw==)...
"1810A0" (eCk8EaFEjWQdbbM0AhmsKw==) was found, attempting connection...
Waiting for advertisement from device #eCk8EaFEjWQdbbM0AhmsKw==...
Advertisement received: [object BluetoothAdvertisingEvent]
❤️ : REQUESTING_BPM_MEASURE
> BPM Notifications started
< "BPM Char Changed": a1 f4 0 a 0
❤️ : RECEIVED_RANDOM
❤️ : SENDING_VERIFICATION_CODE
❤️ : SENDING_TIME_OFFSET
❤️ : REQUEST_MEASUREMENT
> Start notifications for BPM
✅ Systolic: 126, Diastolic: 87, Pulsation: 73
❤️ : SENDING_DISCONNECTION
❤️ : MEASURE_ACQUIRED
globalAccountId : 4245209078
Found 1 authorized devices.
Connecting to 1810A0 (asfjzDiWcbBpW1Is7+9PMA==)...
"1810A0" (asfjzDiWcbBpW1Is7+9PMA==) was found, attempting connection...
Waiting for advertisement from device #asfjzDiWcbBpW1Is7+9PMA==...
I collected bluetooth logs from the chrome://device-log page, with the blood pressure monitor 1810A0 (94:E3:6D:6D:E7:3B).
Here is the scenario I followed on both devices:
- open the
chrome://device-logpage and filter on bluetooth only - make sure the device is not already paired on the Chromebook. device.forget() if needed.
- refresh the pairing page page
- proceed with pairing the blood pressure monitor on the pairing page (With "Add Blood Pressure Monitor")
- refresh the page
- proceed with a measure from the blood pressure monitor (With "Listen AFTER advertisement")
- I expect the measure to show up on screen (✅ on M120, ❌ on M127)
The two log files are in the repo: