Message-ID: <48B12B25.2080700@sssup.it>
Date: Sun, 24 Aug 2008 11:34:29 +0200
From: Ludovico Cavedon <cavedon@sssup.it>
MIME-Version: 1.0
To: BlueZ development <bluez-devel@lists.sourceforge.net>
References: <488CDD7C.40708@sssup.it>
	<19396E3B-AC04-4896-9435-F4BB61DA1075@gmail.com>
In-Reply-To: <19396E3B-AC04-4896-9435-F4BB61DA1075@gmail.com>
Subject: Re: [Bluez-devel] Why always disconnect the headset?
Reply-To: BlueZ development <bluez-devel@lists.sourceforge.net>
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Hi Johan,

Johan Hedberg wrote:
> On Jul 27, 2008, at 23:41, Ludovico Cavedon wrote:
>> I noticed that every time an application closes a SCO audio device, my
>> headset gets disconnected (HEADSET_STATE_DISCONNECTED). This means  
>> that
>> when the application reopens the device, it requires some seconds to  
>> get
>> the audio working.
>>
>> So, why is the headset disconnected and not just left in the state
>> HEADSET_STATE_CONNECTED? (i.e. the same stat that the headset enters
>> when I turn it on and pairs with my pc).
> 
> You didn't mention which version of BlueZ you use, but in recent  
> versions the logic is such that only implicitly created connections  
> are automatically disconnected (after a 3 second timeout) but  
> explicitly created connections stay up until you manually disconnect  
> them. An implicitly created connection would be one caused by an ALSA  
> application when it opens the audio device. Connections that fall into  
> the explicitly created category are those that happen when you turn  
> the headset on and it connects to the PC or when you call the  
> Headset.Connect() D-Bus method and the PC connects to the headset.

Sorry I forgot: I am using 3.26 provided with Ubuntu hardy.
Good news, I'll update my bluez version!

Thank you for your answer,
Ludovico

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