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dotintent / FlutterBleLib

Bluetooth Low Energy library for Flutter with support for simulating peripherals
Apache License 2.0
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Unhandled Exception: BleError (Error code: 2, ATT error code: null, iOS error code: null) #609

Open sivaperumal644 opened 2 years ago

sivaperumal644 commented 2 years ago

While trying to connect device it throws the below error sometimes and not always. I couldn't identify what causes this.

[ERROR:flutter/lib/ui/ui_dart_state.cc(199)] Unhandled Exception: BleError (Error code: 2, ATT error code: null, iOS error code: null, Android error code: null, reason: null, internal message: null, device ID: null, service UUID: null, characteristic UUID: null, descriptor UUID: null)

The error code does not remain the same it changes to 2, 205, 204 and many but couldn't handle this error.

I tried connect(requestMtu: 250).catchError((){print("some error")}) and connect(requestMtu: 250).onError((error, stacktrace) {print("error");});. But it didn't go into catch or the error block.

Couldn't identify what is causing this exception to occur at the first place, and also don't how to handle this exception.

ride4sun commented 2 years ago

Get the same error - I think it is known by the package owner but he is not fixing it. I am wondering if someone branched the package and fixed all the issues because otherwise, this package is solid.

skashok commented 2 years ago

Hi @sivaperumal644 @ride4sun

Did you all manage to get workaround for this issue. I am too still getting this error.

freedreamer82 commented 2 years ago

same here...please find a workaround fix :(

MoralCode commented 2 years ago

there was some discussion of alternatives in #613. I also think i found a list of what the codes mean: https://github.com/dotintent/FlutterBleLib/blob/a4df42eda471f0c53a06b7b9937db8b59585f318/lib/error/ble_error.dart#L55

TL;DR: 2 -> operationCancelled 204 -> deviceNotFound 205 -> deviceNotConnected

that might help solve your more immediate issue, and judging by this it seems like this particular issue may just be a case of "the error is not great at explaining what went wrong to humans" rather than "something is broken in the library that isnt fixed yet"

sivaperumal644 commented 2 years ago

Hi @sivaperumal644 @ride4sun

Did you all manage to get workaround for this issue. I am too still getting this error.

@skashok I couldn't find a solution and I had few more deprecated issues in both android and iOS with this plugin, So I decided to use a different plugin. I used flutter_blue_plugin.