[Bug]: iOS service not found error #693

JLdevFr · 2023-11-20T09:22:13Z

Requirements

I've looked at the README 'Common Problems' section

Have you checked this problem on the example app?

Yes

FlutterBluePlus Version

1.29.4

Flutter Version

3.13.9

What OS?

iOS

OS Version

17.1.1

Bluetooth Module

Espressif esp32-c3 mini

What is your problem?

Communication with iOS with certain BLE modules has stopped for some time. The UUIDs have been shortened, which does not pose any issues. However, with certain BLE modules, we are able to connect to the BLE module, read its services and characteristics, but when we attempt to communicate, we encounter a 'service not found' error. I am using ESPRESSIF BLE modules. It's worth noting that this issue does not arise with Microchip or Minew modules. Additionally, I have also tried with the example application with DART 3.1.5.

Logs

[FBP-iOS] handleMethodCall: connect
flutter: [FBP] \^[[1;30m<connect>\^[[0m result: \^[[1;33mtr
[FBP-iOS] didConnectPeripheral
flutter: [FBP] \^[[1;30m[[ OnConnectionStateChanged ]]\^[[0m result: \^[[1;33m{remote_id: DD017D95-5AD9-E191-11A4-6A0358E5F0C7, connection_state: 1, disconnect_reason_code: null, disconnect_reason_string: nul
flutter: [FBP] \^[[1;30m[[ OnMtuChanged ]]\^[[0m result: \^[[1;33m{remote_id: DD017D95-5AD9-E191-11A4-6A0358E5F0C7, success: 1, error_string: success, error_code: 0, mtu: 2
flutter: [FBP] \^[[1;30m[[ OnMtuChanged ]]\^[[0m result: \^[[1;33m{remote_id: DD017D95-5AD9-E191-11A4-6A0358E5F0C7, success: 1, error_string: success, error_code: 0, mtu: 50
flutter: [FBP] \^[[1;30m<discoverServices>\^[[0m args: \^[[1;35mDD017D95-5AD9-E191-11A4-6A0358E5F0
[FBP-iOS] handleMethodCall: discoverServices
flutter: [FBP] \^[[1;30m<discoverServices>\^[[0m result: \^[[1;33mtr
[FBP-iOS] didDiscoverServices
[FBP-iOS] Found service: 0000FFF0-0000-1000-8000-00805F9B34FB
[FBP-iOS] didDiscoverCharacteristicsForService
[FBP-iOS] didDiscoverDescriptorsForCharacteristic
[FBP-iOS] didDiscoverDescriptorsForCharacteristic
flutter: [FBP] \^[[1;30m[[ OnDiscoveredServices ]]\^[[0m result: \^[[1;33m{remote_id: DD017D95-5AD9-E191-11A4-6A0358E5F0C7, success: 1, services: [{remote_id: DD017D95-5AD9-E191-11A4-6A0358E5F0C7, characteristics: [{remote_id: DD017D95-5AD9-E191-11A4-6A0358E5F0C7, descriptors: [{remote_id: DD017D95-5AD9-E191-11A4-6A0358E5F0C7, characteristic_uuid: 0000fff2-0000-1000-8000-00805f9b34fb, descriptor_uuid: 2902, service_uuid: 0000fff0-0000-1000-8000-00805f9b34fb, secondary_service_uuid: null}], characteristic_uuid: 0000fff2-0000-1000-8000-00805f9b34fb, properties: {notify: 1, indicate_encryption_required: 0, write: 1, read: 0, write_without_response: 0, notify_encryption_required: 0, broadcast: 0, extended_properties: 0, indicate: 0, authenticated_signed_writes: 0}, service_uuid: 0000fff0-0000-1000-8000-00805f9b34fb, secondary_service_uuid: null}, {remote_id: DD017D95-5AD9-E191-11A4-6A0358E5F0C7, descriptors: [], characteristic_uuid: 0000fff1-0000-1000-8000-00805f9b34fb, properties: {notify: 0, indicate_encryption_required: 0, write: 0, read: 1, write_without_response: 0, notify_encryption_required: 0, broadcast: 0, extended_properties: 0, indicate: 0, authenticated_signed_writes: 0}, service_uuid: 0000fff0-0000-1000-8000-00805f9b34fb, secondary_service_uuid: null}], is_primary: true, service_uuid: 0000fff0-0000-1000-8000-00805f9b34fb, included_services: []}], error_string: success, error_code:
flutter: [FBP] \^[[1;30m<writeCharacteristic>\^[[0m args: \^[[1;35m{remote_id: DD017D95-5AD9-E191-11A4-6A0358E5F0C7, service_uuid: fff0, secondary_service_uuid: null, characteristic_uuid: fff2, write_type: 0, allow_long_write: 0, value: 6f80ea7
[FBP-iOS] handleMethodCall: writeCharacteristic
flutter: [FBP] \^[[1;30m<readCharacteristic>\^[[0m args: \^[[1;35m{remote_id: DD017D95-5AD9-E191-11A4-6A0358E5F0C7, service_uuid: fff0, secondary_service_uuid: null, characteristic_uuid: fff
[FBP-iOS] handleMethodCall: readCharacteristic
flutter: [FBP] \^[[1;30m<disconnect>\^[[0m args: \^[[1;35mDD017D95-5AD9-E191-11A4-6A0358E5F0
[FBP-iOS] handleMethodCall: disconnect
[FBP-iOS] disconnect: canceling connection in progress
flutter: [FBP] \^[[1;30m<disconnect>\^[[0m result: \^[[1;33mtr
[FBP-iOS] didDisconnectPeripheral
flutter: [FBP] \^[[1;30m[[ OnConnectionStateChanged ]]\^[[0m result: \^[[1;33m{remote_id: DD017D95-5AD9-E191-11A4-6A0358E5F0C7, connection_state: 0, disconnect_reason_code: 23789258, disconnect_reason_string: connection cancele

chipweinberger · 2023-11-20T09:24:22Z

I dont see any errors in your logs?

from your logs, the only service found is "[FBP-iOS] Found service: 0000FFF0-0000-1000-8000-00805F9B34FB"

JLdevFr · 2023-11-20T09:27:59Z

with the example code, the error appear on the screen with a snackbar.
On my app, the try cath return error since the last update of FBP :
[FBP-iOS] handleMethodCall: writeCharacteristic
flutter: communication error: PlatformException(writeCharacteristic, service not found 'fff0', null, null)

The ESPRESSIF modules are mounted on systems that were working very well until the latest updates of FBP. We have three types of modules installed on our products: BM71, Minew, and ESPRESSIF. Indeed, there is an error only on iOS and only with the ESPRESSIF modules.

chipweinberger · 2023-11-20T09:31:57Z

try adding logs to this.

- (CBService *)getServiceFromArray:(NSString *)uuid array:(NSArray<CBService *> *)array
{
    for (CBService *s in array)
    {
       NSLog(@"%@ %@", [s.UUID uuidStr], uuid); // add this log
        if ([[s.UUID uuidStr] isEqualToString:uuid])
        {
            return s;
        }
    }
    return nil;
}

chipweinberger · 2023-11-20T09:39:54Z

i think these three functions need to be this.

you can try it and let me know.

- (CBService *)getServiceFromArray:(NSString *)uuid array:(NSArray<CBService *> *)array
{
    for (CBService *s in array)
    {
        if ([s.UUID isEqual:[CBUUID UUIDWithString:uuid]])
        {
            return s;
        }
    }
    return nil;
}

- (CBCharacteristic *)getCharacteristicFromArray:(NSString *)uuid array:(NSArray<CBCharacteristic *> *)array
{
    for (CBCharacteristic *c in array)
    {
        if ([c.UUID isEqual:[CBUUID UUIDWithString:uuid]])
        {
            return c;
        }
    }
    return nil;
}

- (CBDescriptor *)getDescriptorFromArray:(NSString *)uuid array:(NSArray<CBDescriptor *> *)array
{
    for (CBDescriptor *d in array)
    {
        if ([d.UUID isEqual:[CBUUID UUIDWithString:uuid]])
        {
            return d;
        }
    }
    return nil;
}

JLdevFr · 2023-11-20T09:47:28Z

iv only use service and characteristics functions :
flutter: /////
flutter: BluetoothService{remoteId: DD017D95-5AD9-E191-11A4-6A0358E5F0C7, serviceUuid: fff0, isPrimary: true, characteristics: [BluetoothCharacteristic{remoteId: DD017D95-5AD9-E191-11A4-6A0358E5F0C7, serviceUuid: fff0, secondaryServiceUuid: null, characteristicUuid: fff2, descriptors: [BluetoothDescriptor{remoteId: DD017D95-5AD9-E191-11A4-6A0358E5F0C7, serviceUuid: fff0, characteristicUuid: fff2, descriptorUuid: 2902, lastValue: []}], properties: CharacteristicProperties{broadcast: false, read: false, writeWithoutResponse: false, write: true, notify: true, indicate: false, authenticatedSignedWrites: false, extendedProperties: false, notifyEncryptionRequired: false, indicateEncryptionRequired: false}, value: []}, BluetoothCharacteristic{remoteId: DD017D95-5AD9-E191-11A4-6A0358E5F0C7, serviceUuid: fff0, secondaryServiceUuid: null, characteristicUuid: fff1, descriptors: [], properties: CharacteristicProperties{broadcast: false, read: true, writeWithoutResponse: false, write: false, notify: false, indicate: false, authenticatedSignedWrites: false, extendedProperties: false, notifyEncryptionRequired: false, indicateEncryptionRequired: false}, value: []}], includedServices: []}
flutter: BluetoothCharacteristic{remoteId: DD017D95-5AD9-E191-11A4-6A0358E5F0C7, serviceUuid: fff0, secondaryServiceUuid: null, characteristicUuid: fff2, descriptors: [BluetoothDescriptor{remoteId: DD017D95-5AD9-E191-11A4-6A0358E5F0C7, serviceUuid: fff0, characteristicUuid: fff2, descriptorUuid: 2902, lastValue: []}], properties: CharacteristicProperties{broadcast: false, read: false, writeWithoutResponse: false, write: true, notify: true, indicate: false, authenticatedSignedWrites: false, extendedProperties: false, notifyEncryptionRequired: false, indicateEncryptionRequired: false}, value: []}
flutter: /////

All the detection of service and characteristics is okay; however, as soon as there is an attempt to write or read, the 'service not found' error occurs :
flutter: communication error: PlatformException(writeCharacteristic, service not found 'fff0', null, null)

chipweinberger · 2023-11-20T09:52:22Z

i think these three functions need to be this.

you can try it and let me know.

see above ^^

JLdevFr · 2023-11-20T10:01:21Z

i think these three functions need to be this.
you can try it and let me know.

see above ^^

flutter: BluetoothService{remoteId: DD017D95-5AD9-E191-11A4-6A0358E5F0C7, serviceUuid: fff0, isPrimary: true, characteristics: [BluetoothCharacteristic{remoteId: DD017D95-5AD9-E191-11A4-6A0358E5F0C7, serviceUuid: fff0, secondaryServiceUuid: null, characteristicUuid: fff2, descriptors: [BluetoothDescriptor{remoteId: DD017D95-5AD9-E191-11A4-6A0358E5F0C7, serviceUuid: fff0, characteristicUuid: fff2, descriptorUuid: 2902, lastValue: []}], properties: CharacteristicProperties{broadcast: false, read: false, writeWithoutResponse: false, write: true, notify: true, indicate: false, authenticatedSignedWrites: false, extendedProperties: false, notifyEncryptionRequired: false, indicateEncryptionRequired: false}, value: []}, BluetoothCharacteristic{remoteId: DD017D95-5AD9-E191-11A4-6A0358E5F0C7, serviceUuid: fff0, secondaryServiceUuid: null, characteristicUuid: fff1, descriptors: [], properties: CharacteristicProperties{broadcast: false, read: true, writeWithoutResponse: false, write: false, notify: false, indicate: false, authenticatedSignedWrites: false, extendedProperties: false, notifyEncryptionRequired: false, indicateEncryptionRequired: false}, value: []}], includedServices: []}
flutter: BluetoothCharacteristic{remoteId: DD017D95-5AD9-E191-11A4-6A0358E5F0C7, serviceUuid: fff0, secondaryServiceUuid: null, characteristicUuid: fff2, descriptors: [BluetoothDescriptor{remoteId: DD017D95-5AD9-E191-11A4-6A0358E5F0C7, serviceUuid: fff0, characteristicUuid: fff2, descriptorUuid: 2902, lastValue: []}], properties: CharacteristicProperties{broadcast: false, read: false, writeWithoutResponse: false, write: true, notify: true, indicate: false, authenticatedSignedWrites: false, extendedProperties: false, notifyEncryptionRequired: false, indicateEncryptionRequired: false}, value: []}
flutter: BluetoothCharacteristic{remoteId: DD017D95-5AD9-E191-11A4-6A0358E5F0C7, serviceUuid: fff0, secondaryServiceUuid: null, characteristicUuid: fff1, descriptors: [], properties: CharacteristicProperties{broadcast: false, read: true, writeWithoutResponse: false, write: false, notify: false, indicate: false, authenticatedSignedWrites: false, extendedProperties: false, notifyEncryptionRequired: false, indicateEncryptionRequired: false}, value: []}
[FBP-iOS] handleMethodCall: setNotifyValue
flutter: PlatformException(setNotifyValue, service not found 'fff0', null, null)

chipweinberger · 2023-11-20T10:02:30Z

?

JLdevFr · 2023-11-20T10:14:59Z

(CBService *)getServiceFromArray:(NSString *)uuid array:(NSArray<CBService *> *)array
{
for (CBService *s in array)
{
NSLog(@"%@ %@", [s.UUID uuidStr], uuid); // add this log
if ([[s.UUID uuidStr] isEqualToString:uuid])
{
return s;
}
}
return nil;
}

Sorry, I didn't understand what you were asking.
Here are the logs:
[FBP-iOS] didConnectPeripheral
flutter: [FBP] ^[[1;30m[[ OnConnectionStateChanged ]]^[[0m result: ^[[1;33m{remote_id: DD017D95-5AD9-E191-11A4-6A0358E5F0C7, connection_state: 1, disconnect_reason_code: null, disconnect_reason_string: nul
flutter: [FBP] ^[[1;30m[[ OnMtuChanged ]]^[[0m result: ^[[1;33m{remote_id: DD017D95-5AD9-E191-11A4-6A0358E5F0C7, success: 1, error_string: success, error_code: 0, mtu: 2
flutter: [FBP] ^[[1;30m[[ OnMtuChanged ]]^[[0m result: ^[[1;33m{remote_id: DD017D95-5AD9-E191-11A4-6A0358E5F0C7, success: 1, error_string: success, error_code: 0, mtu: 50
flutter: [FBP] ^[[1;30m^[[0m args: ^[[1;35mDD017D95-5AD9-E191-11A4-6A0358E5F0
[FBP-iOS] handleMethodCall: discoverServices
flutter: [FBP] ^[[1;30m^[[0m result: ^[[1;33mtr
[FBP-iOS] didDiscoverServices
[FBP-iOS] Found service: 0000FFF0-0000-1000-8000-00805F9B34FB
[FBP-iOS] didDiscoverCharacteristicsForService
[FBP-iOS] didDiscoverDescriptorsForCharacteristic
[FBP-iOS] didDiscoverDescriptorsForCharacteristic
flutter: [FBP] ^[[1;30m[[ OnDiscoveredServices ]]^[[0m result: ^[[1;33m{remote_id: DD017D95-5AD9-E191-11A4-6A0358E5F0C7, success: 1, services: [{remote_id: DD017D95-5AD9-E191-11A4-6A0358E5F0C7, characteristics: [{remote_id: DD017D95-5AD9-E191-11A4-6A0358E5F0C7, descriptors: [{remote_id: DD017D95-5AD9-E191-11A4-6A0358E5F0C7, characteristic_uuid: 0000fff2-0000-1000-8000-00805f9b34fb, descriptor_uuid: 2902, service_uuid: 0000fff0-0000-1000-8000-00805f9b34fb, secondary_service_uuid: null}], characteristic_uuid: 0000fff2-0000-1000-8000-00805f9b34fb, properties: {notify: 1, indicate_encryption_required: 0, write: 1, read: 0, write_without_response: 0, notify_encryption_required: 0, broadcast: 0, extended_properties: 0, indicate: 0, authenticated_signed_writes: 0}, service_uuid: 0000fff0-0000-1000-8000-00805f9b34fb, secondary_service_uuid: null}, {remote_id: DD017D95-5AD9-E191-11A4-6A0358E5F0C7, descriptors: [], characteristic_uuid: 0000fff1-0000-1000-8000-00805f9b34fb, properties: {notify: 0, indicate_encryption_required: 0, write: 0, read: 1, write_without_response: 0, notify_encryption_required: 0, broadcast: 0, extended_properties: 0, indicate: 0, authenticated_signed_writes: 0}, service_uuid: 0000fff0-0000-1000-8000-00805f9b34fb, secondary_service_uuid: null}], is_primary: true, service_uuid: 0000fff0-0000-1000-8000-00805f9b34fb, included_services: []}], error_string: success, error_code:
flutter: [FBP] ^[[1;30m^[[0m args: ^[[1;35m{remote_id: DD017D95-5AD9-E191-11A4-6A0358E5F0C7, service_uuid: fff0, secondary_service_uuid: null, characteristic_uuid: fff
[FBP-iOS] handleMethodCall: readCharacteristic
0000fff0-0000-1000-8000-00805f9b34fb fff0

chipweinberger · 2023-11-20T10:17:42Z

thanks.

0000fff0-0000-1000-8000-00805f9b34fb fff0

yes this log confirms the issue, the fix here should fix it

JLdevFr · 2023-11-20T10:24:53Z

(CBService *)getServiceFromArray:(NSString *)uuid array:(NSArray<CBService *> *)array
{
for (CBService *s in array)
{
if ([s.UUID isEqual:[CBUUID UUIDWithString:uuid]])
{
return s;
}
}
return nil;
}

(CBCharacteristic *)getCharacteristicFromArray:(NSString *)uuid array:(NSArray<CBCharacteristic *> *)array
{
for (CBCharacteristic *c in array)
{
if ([c.UUID isEqual:[CBUUID UUIDWithString:uuid]])
{
return c;
}
}
return nil;
}

(CBDescriptor *)getDescriptorFromArray:(NSString *)uuid array:(NSArray<CBDescriptor *> *)array
{
for (CBDescriptor *d in array)
{
if ([d.UUID isEqual:[CBUUID UUIDWithString:uuid]])
{
return d;
}
}
return nil;
}

Indeed, this has resolved my issue. Thank you very much for your prompt responses!

chipweinberger · 2023-11-20T21:23:40Z

fixed in 1.29.5

JLdevFr added the bug Something isn't working label Nov 20, 2023

chipweinberger changed the title ~~[Bug]: iOS BLE communication error~~ [Bug]: iOS service not found error Nov 20, 2023

JLdevFr closed this as completed Nov 20, 2023

Repository owner deleted a comment from irfanismaya20 Nov 20, 2023

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[Bug]: iOS service not found error #693

[Bug]: iOS service not found error #693

JLdevFr commented Nov 20, 2023

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JLdevFr commented Nov 20, 2023

chipweinberger commented Nov 20, 2023

[Bug]: iOS service not found error #693

[Bug]: iOS service not found error #693

Comments

JLdevFr commented Nov 20, 2023

Requirements

Have you checked this problem on the example app?

FlutterBluePlus Version

Flutter Version

What OS?

OS Version

Bluetooth Module

What is your problem?

Logs

chipweinberger commented Nov 20, 2023 • edited Loading

JLdevFr commented Nov 20, 2023 • edited Loading

chipweinberger commented Nov 20, 2023

chipweinberger commented Nov 20, 2023

JLdevFr commented Nov 20, 2023 • edited Loading

chipweinberger commented Nov 20, 2023

JLdevFr commented Nov 20, 2023

chipweinberger commented Nov 20, 2023

JLdevFr commented Nov 20, 2023

chipweinberger commented Nov 20, 2023 • edited Loading

JLdevFr commented Nov 20, 2023

chipweinberger commented Nov 20, 2023

chipweinberger commented Nov 20, 2023 •

edited

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JLdevFr commented Nov 20, 2023 •

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JLdevFr commented Nov 20, 2023 •

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chipweinberger commented Nov 20, 2023 •

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