open Bluetooth port in 10.5

Hi

I have filed thread previously, but it confusing, so i filed it again
properlly.

I used open function to open bluetooth port on MacOS 10.5.1.

My code is as below


int fd = -1;
fd = open(Bluetooth port path,O_RDWR + O_NOCTTY + O_NONBLOCK +
O_EXLOCK); \\it open port successfully
if(fd == -1)
printf("\nPort open failed..");
else
{
printf("\nPort successfully opened..);
close(fd);
fd = -1;
}
fd = open(Bluetooth port path,O_RDWR + O_NOCTTY + O_NONBLOCK +
O_EXLOCK); \\it blocks (no return).


but it hangs in open function, it is not returning....i also tried
with various flags..


I do operation in sequence open then close then again open
immediately...
first time it open successfully .. second time it hand in open. (open
function block)

Note :: Same thing works on MacOS 10.4(it's return success or failed)

What may be the problem ?


p2