4908     int error;  in server_socket()  local
4918     error= getaddrinfo(interface, port_buf, &hints, &ai);  in server_socket()
4919     if (error != 0) {  in server_socket()
4920         if (error != EAI_SYSTEM)  in server_socket()
4921           fprintf(stderr, "getaddrinfo(): %s\n", gai_strerror(error));  in server_socket()
4943             error = setsockopt(sfd, IPPROTO_IPV6, IPV6_V6ONLY, (char *) &flags, sizeof(flags));  in server_socket()
4944             if (error != 0) {  in server_socket()
4956             error = setsockopt(sfd, SOL_SOCKET, SO_KEEPALIVE, (void *)&flags, sizeof(flags));  in server_socket()
4957             if (error != 0)  in server_socket()
4960             error = setsockopt(sfd, SOL_SOCKET, SO_LINGER, (void *)&ling, sizeof(ling));  in server_socket()
4961             if (error != 0)  in server_socket()
4964             error = setsockopt(sfd, IPPROTO_TCP, TCP_NODELAY, (void *)&flags, sizeof(flags));  in server_socket()
4965             if (error != 0)  in server_socket()