MTU about flutter_web_bluetooth HOT 6 CLOSED

Looking at the Bluetooth web specification there seems no way to change or even request the MTU size. So if I read it correctly there is no way currently to support this.

https://webbluetoothcg.github.io/web-bluetooth/#ref-for-exchange-mtu

from flutter_web_bluetooth.

Thanks for your reply!
Er..I have a problem, when using the web bluetooth, some data can write success, but some can not with the same character, seem like my device ignore that. The api told me write success, but device doesn't work
And I tried write the same data by my phone to the device, and It works
Did the web bluetooth have some unknown limit when write data to character?

The data success:
[2, 2, 242, 1, 0, 40, 55, 69, 68, 70, 53, 54, 67, 68, 65, 57, 57, 68, 69, 52, 49, 48, 55, 65, 52, 51, 51, 57, 67, 48, 53, 67, 69, 68, 65, 55, 55, 49, 52, 68, 70, 54, 55, 53, 51, 66, 48, 3]
The data failed:
[83, 75, 67, 70, 71, 123, 34, 109, 97, 99, 34, 58, 34, 54, 54, 55, 48, 67, 69, 66, 65, 34, 44, 34, 103, 114, 111, 117, 112, 34, 58, 56, 48, 48, 49, 44, 34, 114, 101, 115, 116, 97, 114, 116, 34, 58, 49, 125]

from flutter_web_bluetooth.

my code:
flutter_web_ble

from flutter_web_bluetooth.

Hi, do u have any suggestion?

from flutter_web_bluetooth.

It's difficult to see what your error is precisely, I did see this in the specification:

If bytes is more than 512 bytes long (the maximum length of an attribute value, per Long Attribute Values) return a promise rejected with an InvalidModificationError and abort these steps.

But your data doesn't seem to be longer than that limit.

What I can suggest you try is using writeValueWithoutResponse and seeing if that fixes it.

I'm also not sure if this line properly waits for the device to be connected, so you may just be sending data too early.

from flutter_web_bluetooth.

I tried, don't work, the result is still one success, the other fail with nothing happened
Thanks a lot.

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