[Bluez-devel] how to use more than one dongle at the same time

[Bluez-devel] how to use more than one dongle at the same time

[ermal mino]

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.

Best Regards
Ermal Mino.


	

	
		
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Re: [Bluez-devel] how to use more than one dongle at the same time

[Marcel Holtmann]

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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