setopt
static int setopt(char *);
if (setopt(cp))
static int setopt(int fd, int level, int name, int value);
if (setopt(fd, SOL_SOCKET, SO_SNDBUF, val) < 0) {
if (setopt(fd, SOL_SOCKET, SO_RCVBUF, val) < 0) {
return (setopt(fd, SOL_SOCKET, SO_REUSEADDR, 1));
return (setopt(fd, SOL_SOCKET, SO_RECVUCRED, 1));
return (setopt(fd, SOL_SOCKET, SO_ANON_MLP, 1));