Subject: Re: [Bluez-devel] how to use more than one dongle at the same time
From: Marcel Holtmann <marcel@holtmann.org>
To: bluez-devel@lists.sourceforge.net
In-Reply-To: <20060130144942.84846.qmail@web53105.mail.yahoo.com>
References: <20060130144942.84846.qmail@web53105.mail.yahoo.com>
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Date: Tue, 07 Feb 2006 12:15:50 +0100

Hi,

> I've been working around trying to use two ore more
> usb dongles at the same time ,(by the way I could send
> files from one dongle at the same time to more than
> one cellphones.)
> as usual i start command line tool to witch i give the
> address of one dongle
> and in another konsole i start another programm using
> the other dongle.
> Both programs are used to send different files from
> different dongles.
> 
> the way i bind the socket I use is this.
> 
>         struct sockaddr_rc addr={0},laddr={0};
>         s = socket(AF_BLUETOOTH, SOCK_STREAM,
> BTPROTO_RFCOMM);
> 
>         addr.rc_family = AF_BLUETOOTH;
>    	addr.rc_channel = port ; //remote port
>     	str2ba( remote_addr, &addr.rc_bdaddr );
> 	
> 	laddr.rc_family = AF_BLUETOOTH;
> 	laddr.rc_channel=0; //local
>     	str2ba( local_addr, &laddr.rc_bdaddr );
>         
>         bind(s, (struct sockaddr*)sockaddr,
> sizeof(laddr));
>          
>         connect(s, (struct sockaddr *)&addr,
> sizeof(addr));
>         ......
>          recv();
>          send();
>          .....
>         close(s);
> 
> here remote_addr and local_addr are the string
> representation of local and remote device addresses
> given to the programm from the command line.
> 
> when one of the programs is working(sending and
> recieving data)
> i start the other one and after the first packet is
> sent or the connection is made it all stops and both
> the connections remains open.
> I checked and i am the master in both cases.
> 
> Is this normal?
> why i can't use them concurrently.

in general this should work. However start using hcidump to debug this
and then send in more details.

Regards

Marcel


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