- (void) sendit:(char[500])dref value:(float)v {

    int sock = 0; /// ?

    NSLog(@"starting udp testing");

    if ((sock = socket(PF_INET, SOCK_DGRAM, IPPROTO_UDP)) == -1) {
        NSLog(@"Failed to create socket, error=%s", strerror(errno));
    }

    struct sockaddr_in destination;
    //memset(&destination, 0, sizeof(struct sockaddr_in));
    memset(&destination, 0, sizeof(destination));

    //destination.sin_len = sizeof(struct sockaddr_in);
    destination.sin_family = AF_INET;

    NSString *ip = @"192.168.1.109";
    destination.sin_addr.s_addr = inet_addr([ip UTF8String]);
    destination.sin_port = htons(49000); //port


    /* server port */
    setsockopt(sock,
               IPPROTO_IP,
               IP_MULTICAST_IF,
               &destination,
               sizeof(destination));


    ////////
    char data_send[509];
    memset(&data_send, 0, sizeof(data_send));
    struct dref_struct mystruct;
    mystruct.var = v;
    strcpy(mystruct.dref_path, dref);

    data_send[0] = 'D';
    data_send[1] = 'R';
    data_send[2] = 'E';
    data_send[3] = 'F';
    data_send[4] = 0;

    memcpy(&data_send[5], &mystruct, sizeof(struct dref_struct));
    NSLog(@"Size: %lu", sizeof(struct dref_struct));

    if (sendto(sock, data_send , sizeof(struct dref_struct)+5, 0, (struct sockaddr *) &destination, sizeof(destination)) == -1) {
        NSLog(@"did not send");
    } else {
        NSLog(@"did send");
    }

    close(sock);
    //shutdown(sock, 1);
}