Can anybody point me to sample code for an RFCOMM server that can accept
connections without the need for pairing?
I am trying to get this working under Debian Squeeze, which has Bluez
4.66. Both ends of the connection are using Bluetooth v2.0 hardware.
I found this discussion:
http://permalink.gmane.org/gmane.linux.bluez.kernel/13828
indicating that with my hardware, adjusting the security level on the
server socket will disable pairing. However, I have not been able to
make this work - bluetoothd triggers a link_key_request and
pin_code_request on every connection attempt.
Any advice you can offer would be greatly appreciated.
--
Current test server:
#include <stdio.h>
#include <unistd.h>
#include <sys/socket.h>
#include <bluetooth/bluetooth.h>
#include <bluetooth/rfcomm.h>
int main(int argc, char **argv)
{
struct sockaddr_rc loc_addr = { 0 }, rem_addr = { 0 };
char buf[1024] = { 0 };
int s, client, bytes_read;
unsigned int opt = sizeof(rem_addr);
// allocate socket
s = socket(AF_BLUETOOTH, SOCK_STREAM, BTPROTO_RFCOMM);
struct bt_security sec = { BT_SECURITY_LOW };
if (setsockopt(s, SOL_BLUETOOTH, BT_SECURITY, &sec, sizeof(sec)) < 0) {
fprintf(stderr, "failed to set security level");
return 2;
}
// bind socket to port 1 of the first available bluetooth adapter
loc_addr.rc_family = AF_BLUETOOTH;
loc_addr.rc_bdaddr = *BDADDR_ANY;
loc_addr.rc_channel = 1;
bind(s, (struct sockaddr *)&loc_addr, sizeof(loc_addr));
// put socket into listening mode
listen(s, 1);
// accept one connection
client = accept(s, (struct sockaddr *)&rem_addr, &opt);
ba2str( &rem_addr.rc_bdaddr, buf );
fprintf(stderr, "accepted connection from %s\n", buf);
memset(buf, 0, sizeof(buf));
// read data from the client
bytes_read = recv(client, buf, sizeof(buf), 0);
if( bytes_read > 0 ) {
printf("received [%s]\n", buf);
}
// close connection
close(client);
close(s);
return 0;
}
--
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