Someone

int radiusrun (int **data) {
    // unsigned char buffer[MAX_RADIUS_PACKET_LEN];
    unsigned char *buffer = (unsigned char *) malloc(MAX_RADIUS_PACKET_LEN+1);
    unsigned char *packet;
    packet = buffer;
    struct sockaddr_in * fromaddr;
    int  pfd;
    int  size;
    fd_set set;
    struct timeval timeout;
    int nfd;
    time_t next = 0;
    char saddr[32];

    pfd = create_udp_socket(radiusa_listen_port);

    for (;;)  {

        FD_ZERO(&set);
        FD_SET(pfd, &set);

        do  {
            nfd = select(pfd + 1, &set, NULL, NULL, &timeout);
        } while (nfd < 0 && errno == EINTR);

        if (nfd < 0)  {
            error("select 1");
        }

        if (FD_ISSET(pfd, &set))  {
            if ((size = read_packet2(pfd, buffer, fromaddr)))  {

                    struct sockaddr_in *fin;
                    fin = (struct sockaddr_in *) &fromaddr;
                    struct  in_addr sourceip = fin->sin_addr;
                    strcpy(saddr,inet_ntoa(sourceip));
                    printf ("Got radius packet from %s, port %d\n",saddr, fin->sin_port);
#ifdef DEBUG
                printf("Parsing a radius packet of size: %d\n", size) ;
#endif
                decode_radius_data(packet, size, data);
            }
        }

    }

    return 0 ;
}