Re: [Bluez-devel] Setting up two connections at the same time

[Herman Meerlo <herman@service2media.com>]

Hi Marcel,


>>>>thanks for your reply. It is not only a problem if one single 
>>>>application tries to set-up multiple connections simultaneously, it will 
>>>>also fail if two independent applications on one machine try to setup a 
>>>>connection. This makes bluetooth an unreliable medium from an end-user 
>>>>perspective because connection set-up may fail randomly because of this. 
>>>>This will off course not happen extremely often. However I think that 
>>>>this problem could be solved at HCI level which can keep track of the 
>>>>controller state. E.g. it could hold up any Connection Request until the 
>>>>previous one has finished. Or am I missing something?
>>>>        
>>>>
>>>feel free to propose something to support this. However this must be
>>>done at kernel level in the Bluetooth core HCI functions.
>>>      
>>>
>>I was afraid you were going to say this :-) I completely agree with you 
>>and I hope my boss will give me the time to think about this and let me 
>>make a prototype. In the meantime I will probably try to workaround this 
>>with multiple dongles.
>>    
>>
>
>and btw you will see similar problems with inquiry and remote name
>requests at the same time. You might need to serialize all of them.
>
>An interesting question is how any of Windows stacks handles this? Are
>they capable of dealing with it or do they act like Linux?
>
>
>  
>
two minds, one thought. I was thinking exactly the same. I did indeed 
see the same problems with remote name requests (I already serialized 
the inquiry process in my application). Maybe I will try to make a test 
set-up for this to see how windows behaves.

Regards,

Herman


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