12   int fd, sfd;  in main()  local
19     fd = socket(AF_INET, SOCK_STREAM, 0);  in main()
20     if (fd == -1)  in main()
27     if (connect(fd, (struct sockaddr *)&server, sizeof(server)) == -1)  in main()
30     close(fd);  in main()
35   fd = socket(AF_INET, SOCK_STREAM, 0);  in main()
36   if (fd == -1) {  in main()
46   if (bind(fd, (const struct sockaddr *)&server, sizeof(server)) == -1) {  in main()
52   listen(fd, 3);  in main()
61   sfd = paccept(fd, (struct sockaddr *)&client, &len, &set, SOCK_NONBLOCK);  in main()
71   close(fd);  in main()