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* [Bluez-devel] multiple connection problem
@ 2006-02-15 19:27 Irfan Ahmad
  2006-02-15 19:31 ` Marcel Holtmann
  0 siblings, 1 reply; 4+ messages in thread
From: Irfan Ahmad @ 2006-02-15 19:27 UTC (permalink / raw)
  To: bluez-devel

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Hi,

I am working on a software for bluetooth scatternet formation and routing.

When I try to accept two connections from different BT devices, the second
device gives a page fault error. Here I paste the code which I am trying to
use in my test run.

 #include <stdio.h>#include <string.h>#include <sys/socket.h>#include
<bluetooth/bluetooth.h>#include <bluetooth/l2cap.h>
#define LQ 10int main(int argc, char **argv)
{
	*struct* sockaddr_l2 loc_addr = { 0 }, rem_addr = { 0 };
	char buf[1024] = { 0 },rem_name[100] = { 0 };
	int s, client, bytes_read;
	int opt = *sizeof*(rem_addr);

    *// allocate socket*
	s = socket(AF_BLUETOOTH, SOCK_SEQPACKET, BTPROTO_L2CAP);

    *// bind socket to port 0x1001 of the first available *
    *// bluetooth adapter*
	loc_addr.l2_family = AF_BLUETOOTH;
	loc_addr.l2_bdaddr = *BDADDR_ANY;
	loc_addr.l2_psm = htobs(0x1001);

	bind(s, (*struct* sockaddr *)&loc_addr, *sizeof*(loc_addr));

    *// put socket into listening mode*
	listen(s, LQ);
	
	*while*(1)
	{
		*// accept one connection*
		client = accept(s, (*struct* sockaddr *)&rem_addr, &opt);

		ba2str( &rem_addr.l2_bdaddr, rem_name );
		fprintf(stderr, "accepted connection from %s\n", rem_name);
		*if* (fork()==0)
		{
			close(s);
			memset(buf, 0, *sizeof*(buf));
    			*// read data from the client*
			bytes_read = read(client, buf, *sizeof*(buf));
			*if*( bytes_read > 0 ) {
				fprintf(stderr,"%s: %s\n", rem_name,buf);
			}
			*// close connection*
			close(client);
                        exit(0);
                }
	}
	close(s);
}

Please help me regarding this problem. Also if some has worked on scatternet
projects or know about any, then please give me reference.

Thanks,
Irfan Ahmad

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^ permalink raw reply	[flat|nested] 4+ messages in thread
* [Bluez-devel] multiple connection problem
@ 2006-02-16 13:49 Irfan Ahmad
  2006-02-17 17:41 ` Marcel Holtmann
  0 siblings, 1 reply; 4+ messages in thread
From: Irfan Ahmad @ 2006-02-16 13:49 UTC (permalink / raw)
  To: bluez-devel

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Dear Marcel,

Thank you for ur feed back and help. I had stated in my previous mail that
these dongles are working fine with other bluez functions/commands, but
gives an error when a unit becomes slave of multiple masters. So is it just
because of the hardware or it has some other reasons as well?

Secondly I had a question about piconets. As slaves in piconet cannot
directly communicate with each other and the master will act as a bridge for
their communication. Now is this bridging facility provided by bluez libs?
or do we have to implement it in our program (using Berkley Socket
Interface) meant for piconet communication?

Thanks

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^ permalink raw reply	[flat|nested] 4+ messages in thread
end of thread, other threads:[~2006-02-17 17:41 UTC | newest]

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2006-02-15 19:27 [Bluez-devel] multiple connection problem Irfan Ahmad
2006-02-15 19:31 ` Marcel Holtmann
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2006-02-16 13:49 Irfan Ahmad
2006-02-17 17:41 ` Marcel Holtmann

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