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Date: Mon, 17 Sep 2012 14:21:21 -0700
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Subject: Re: Dropping connection (bit off-topic)
From: John Tobias <john.tobias.ph@gmail.com>
To: Anderson Lizardo <anderson.lizardo@openbossa.org>
Cc: Vinicius Costa Gomes <vinicius.gomes@openbossa.org>,
	linux-bluetooth@vger.kernel.org
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Sender: linux-bluetooth-owner@vger.kernel.org
List-ID: <linux-bluetooth.vger.kernel.org>

Hi Anderson,

Thanks for the info., we will be going to snip what the iOS is sending
to understand the scenario. I think iOS stack has some handshaking
procedure or required in order to maintain the connection. I used
gatttool to connect to the CC2540 demo board and it did not disconnect
like the iOS does.

Regards,

John


On Mon, Sep 17, 2012 at 1:30 PM, Anderson Lizardo
<anderson.lizardo@openbossa.org> wrote:
> Hi John,
>
> On Fri, Sep 14, 2012 at 3:04 PM, John Tobias <john.tobias.ph@gmail.com> wrote:
>> Hi Anderson,
>>
>> Could you give me some bit of information on how to respond to the
>> handle 0x0039?. I'm digging the bluez sources but I'm kind a lost
>> right now and I don't know exactly what library/function should I use
>> in order to configure it.
>
> I suggest you take a look on GATT Procedures on the Core spec (see
> "Discover All Characteristics of a Service" on pages 1916 and the
> Figure 4.5 on page 1917). You will see that "Attribute not found" is
> used to inform the client that there are no more characteristics to
> discover.
>
> Also see channel_handler() in src/attrib-server.c (and the functions
> called by it) to understand how BlueZ's GATT server work.
>
> To avoid the GATT disconnection after 30 sec. you really need to
> figure out what the iPhone app is trying to do, it is clear from your
> hcidump logs that iPhone is disconnecting, not the Linux "client"
> side.
>
> Regards,
> --
> Anderson Lizardo
> Instituto Nokia de Tecnologia - INdT
> Manaus - Brazil