#include "unp.h" #include int main(int argc, char **argv) { int listenfd, connfd; socklen_t addrlen, len; struct sockaddr *cliaddr; char buff[MAXLINE], host[NI_MAXHOST], serv[NI_MAXSERV]; time_t ticks; if (argc == 2) listenfd = Tcp_listen(NULL, argv[1], &addrlen); else if (argc == 3) listenfd = Tcp_listen(argv[1], argv[2], &addrlen); else err_quit("usage: daytimetcpsrv4 [ ] "); cliaddr = Malloc(addrlen); for ( ; ; ) { len = addrlen; connfd = Accept(listenfd, cliaddr, &len); if (getnameinfo(cliaddr, len, host, NI_MAXHOST, serv, NI_MAXSERV, NI_NUMERICHOST | NI_NUMERICSERV) == 0) printf("connection from %s.%s\n", host, serv); ticks = time(NULL); snprintf(buff, sizeof(buff), "%.24s\r\n", ctime(&ticks)); Write(connfd, buff, strlen(buff)); Close(connfd); } }