rfcomm-client.c

#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 addr = { 0 } ;
    int s, status;
    char dest[18] = "01:23:45:67:89:AB";

    // allocate a socket
    s = socket(AF_BLUETOOTH, SOCK_STREAM, BTPROTO_RFCOMM);

    // set the connection parameters (who to connect to)
    addr.rc_family = AF_BLUETOOTH;
    addr.rc_channel = 1;
    str2ba(dest, &addr.rc_bdaddr);

    // connect to server
    status = connect(s, (struct sockaddr*)&addr, sizeof(addr));

    // send a message
    if (0 == status) {
        status = send(s, "hello!", 6, 0);
    }

    if (status < 0) perror ("uh oh");

    close(s);
    return 0;
}