Message-ID: <5f30e2610607300852v675f0436od327a39c2946f9c9@mail.gmail.com>
Date: Sun, 30 Jul 2006 10:52:02 -0500
From: "Jeff Wilson" <jazzbotley@gmail.com>
To: bluez-devel@lists.sourceforge.net
MIME-Version: 1.0
Subject: [Bluez-devel] poll() on RFCOMM socket
Reply-To: BlueZ development <bluez-devel@lists.sourceforge.net>
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Sender: bluez-devel-bounces@lists.sourceforge.net
Errors-To: bluez-devel-bounces@lists.sourceforge.net

Hi all,

I'm on 2.6.11-mh2, running bluez-libs-2.25. I can't seem to get the
following example to work (I edited out the error checking, etc, to
shorten the code segment)  I have a similar function that works fine
with TCP sockets

// begin code segment
int fd = socket(PF_BLUETOOTH, SOCK_STREAM, BTPROTO_RFCOMM);
/* accept(), connection setup, etc */
fcntl(fd, F_SETFL, O_NONBLOCK);
struct pollfd pfd;
pfd.fd = fd;
pfd.events = POLLIN;
pfd.revents = 0;
int res = 0;
while ((res = poll(&poll_struct, 1, 5000)) < 1)
{
   if(res < 0) /* check errno */
   else if(res == 0) /* handle timeout */
}
if (poll_struct.revents & POLLIN) {
  /* do the read ... never gets called :( */
}
// end of code segment


If I take out the fcntl() and poll() and just read() instead, it
blocks until data arrives and then read() works as expected.

Does it matter to the BlueZ implementation if I expand that fd set to
include sockets of other domains, such as UNIX or IP?

     Thanks,
       Jeff

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