exit(1);
cleanup_exit(1);
static void init_winsock(void){    WORD winsock_ver;    WSADATA wsadata;    winsock_ver = MAKEWORD(1, 1);    if (WSAStartup(winsock_ver, &wsadata)) {	fprintf(stderr, "Unable to initialise WinSock");	exit(1);    }    if (LOBYTE(wsadata.wVersion) != 1 || HIBYTE(wsadata.wVersion) != 1) {	fprintf(stderr, "WinSock version is incompatible with 1.1");	exit(1);    }}