Re: [Bluez-users] Timeouts

[Marcel Holtmann <marcel@holtmann.org>]

Hi Pedro,

> I am having some trouble with the timeouts of connections under Bluetooth.
> 
> My first concern is the initial connection timeout. I try to send a file 
> to a mobile phone using OpenOBEX (I use the BtOBEX_TransportConnect()). 
> If the owner of the mobile phone ignores the message that appears in the 
> mobile's screen (asking him/her whether to accept the connection), after 
> 30 seconds the connection fails with "Resource temporarily unavailable" 
> (errno=11). How can I modify this 30 seconds?

you need to integrate a connect timeout (SABM timeout) into the RFCOMM
kernel code.

> I can control the page timeout issuing "hciconfig hci0 pageto 8192", 
> that will limit the time for (correct me if I am wrong) completing the 
> HCI connection to about 5 seconds. But my problem is at a higher level 
> (RFCOMM), since the device is whithin range and the HCI connection is 
> done correctly. Is there any specific command in the bluez API to change 
> the overall connect() timeout? Or is this a Linux issue (something like 
> setsockopt())?

The page timeout is only for the underlaying ACL links. The RFCOMM stuff
is not configurable at the moment.

> The other problem is with the call sdp_service_search_attr_req(). There 
> is one mobile that I am testing, that does not always respond (I am 
> trying to track down the reason). This call takes about 2 minutes to 
> give up so, in the previous scenario, it means that other clients are 
> waiting for two minutes, something unacceptable. Is there a way to 
> reduce this 2 minutes timeout?

I have no idea. I need the phone to play with it.

Regards

Marcel




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