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From: =?UTF-8?Q?Fran=C3=A7ois_Beaufort?= <beaufort.francois@gmail.com>
Date: Wed, 2 Mar 2016 16:19:45 +0100
Message-ID: <CAEZxfGPZOj+uHQde5Lzb3G9HyF-vvDR8R29BatccKkOMkcwGSg@mail.gmail.com>
Subject: Re: Write should return error if device is disconnected while
 expecting a response
To: Luiz Augusto von Dentz <luiz.dentz@gmail.com>
Cc: BlueZ development <linux-bluetooth@vger.kernel.org>
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It does:

[DFU_Test:/service000c/char000d]# write 01 04
Attempting to write /org/bluez/hci0/dev_F1_6F_DE_EC_F1_D6/service000c/char000d
[CHG] Device F1:6F:DE:EC:F1:D6 Connected: no
[CHG] Device F1:6F:DE:EC:F1:D6 Connected: yes
[CHG] Device F1:6F:DE:EC:F1:D6 Name: DfuTarg
[CHG] Device F1:6F:DE:EC:F1:D6 Alias: DfuTarg

On Wed, Mar 2, 2016 at 2:31 PM, Luiz Augusto von Dentz
<luiz.dentz@gmail.com> wrote:
> Hi François,
>
> On Wed, Mar 2, 2016 at 9:31 AM, François Beaufort
> <beaufort.francois@gmail.com> wrote:
>> When writing to a characteristic and that a disconnection happens
>> before getting a write (error) response, BlueZ should inform that
>> write operation failed.
>> See my real example logs below:
>>
>> [DFU_Test:/service000c/char000d]# write 01 04
>> Attempting to write /org/bluez/hci0/dev_F1_6F_DE_EC_F1_D6/service000c/char000d
>>
>>
>>
>> < ACL Data TX: Handle 32 flags 0x00 dlen 9
>>                                                    [hci0] 5.066808
>>       ATT: Write Request (0x12) len 4
>>         Handle: 0x000e
>>           Data: 0104
>>> HCI Event: Number of Completed Packets (0x13) plen 5                                                                    [hci0] 5.106370
>>         Num handles: 1
>>         Handle: 32
>>         Count: 1
>>> HCI Event: Vendor (0xff) plen 7                                                                                         [hci0] 5.579396
>>         82 12 95 40 10 36 59                             ...@.6Y
>>> HCI Event: Disconnect Complete (0x05) plen 4                                                                            [hci0] 5.580376
>>         Status: Success (0x00)
>>         Handle: 32
>>         Reason: Connection Timeout (0x08)
>> @ Device Disconnected: F1:6F:DE:EC:F1:D6 (2) reason 1
>
> Interesting, does bluetoothctl print anything after this?
>
> --
> Luiz Augusto von Dentz