Re: IOBluetoothRFCOMMChannel and NSThread
Re: IOBluetoothRFCOMMChannel and NSThread
- Subject: Re: IOBluetoothRFCOMMChannel and NSThread
- From: Yann Bizeul <email@hidden>
- Date: Tue, 4 May 2004 09:22:53 +0200
>
all UI calls need to be made on the main thread (this is an Appkit
>
restriction) and all Bluetooth calls need to be made on a single
>
thread. So This pretty much means that if you need to use Bluetooth
>
and UI on a thread, all the calls need to be made on the main thread.
>
Using the asyncronous APIs you will avoid blocking the UI for lengthy
>
operations (like connections).
Ok, understood. One point left in the dark is why could I not call [
IOBluetoothDevice pairedDevice ] in my BT thread ? (Sometimes it
returns an empty array, or just one device...). Is this call kind of
AppKit one so I have to use it into the AppKit thread ?
>
Also I would like to point out that trying to connect every 10
>
seconds is a very bad idea. The connection require the connecting
>
device to cover the 2.4Ghz band to find the counterpart which means
>
that you will disrupt AirPort networks. In general this is not that
>
bad because it does not happen that often (only when you connect) and
>
802.11 can recover by re-sending its packets, but if you try to
>
connect every 10 seconds you give very little room for the AirPort
>
network to recover. If you really need to "keep trying" I would
>
suggest attempts between 30 seconds to one minute (the longer the
>
interval, the better).
Understood too :-) I'll change it to 30s, I don't think users need
immediate reconnection, I just have to find discrete visual way to show
when bluetooth recovers.
Thanks to you and others who help me
--
Yann Bizeul - yann at tynsoe.org
http://projects.tynsoe.org/
[demime 0.98b removed an attachment of type application/pkcs7-signature which had a name of smime.p7s]
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