#include "toys.h" int xsocket(int domain, int type, int protocol) { int fd = socket(domain, type, protocol); if (fd < 0) perror_exit("socket %x %x", type, protocol); return fd; } void xsetsockopt(int fd, int level, int opt, void *val, socklen_t len) { if (-1 == setsockopt(fd, level, opt, val, len)) perror_exit("setsockopt"); }