[Bluez-devel] Reading data on two l2cap sockets

[Bluez-devel] Reading data on two l2cap sockets

[Mayank BATRA]

Hi,

I am listening on two l2cap sockets (on different PSMs) and then connecting to these two sockets.
I am using select() to get data on these two sockets.

fd_set readfds;
FD_ZERO(&readfds);
FD_SET(sk1, &readfds);
FD_SET(sk2, &readfds);

while(1) {
	int ready = select(FD_SETSIZE, &readfds, 0, 0, 0);
	if(ready == 0)
		continue;
	if(ready == -1 && errno != EINTR)
		break;
	if(FD_ISSET(sk1, &readfds)) {
		fprintf(stderr, "Got something on sk1\n");
		/* some code */
	}
	if(FD_ISSET(sk2, &readfds)) {
		fprintf(stderr, "Got something on sk2\n");
		/* some code */
	}
}

Now, if I send data on sk1, the line "Got something on sk1" is printed, but if I send data on sk2, the line "Got something on sk2" is never printed.
Is there any contraint that both the l2cap sockets should be on the same PSM?

Regards,
Mayank


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Re: [Bluez-devel] Reading data on two l2cap sockets

[Filippo Giunchedi]

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On Tue, Aug 01, 2006 at 04:41:05PM +0530, Mayank BATRA wrote:
> 
> Now, if I send data on sk1, the line "Got something on sk1" is printed, but if I send data on sk2, the line "Got something on sk2" is never printed.

I don't know the internals but you should really FD_SET readfds after every
select() invocation, i.e. move the readfds initialization inside the while loop.

filippo
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Filippo Giunchedi - http://esaurito.net
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Re: [Bluez-devel] Reading data on two l2cap sockets

[Mayank BATRA]

Filippo,
 
> I don't know the internals but you should really FD_SET 
> readfds after every
> select() invocation, i.e. move the readfds initialization 
> inside the while loop.

Thanks for your suggestions. It actually works!
I had been spending so much time figuring out why it does not work.

Regards,
Mayank


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