1 int main(int argc, char *argv[])
7 struct sockaddr_in serv_add;
10 if ( (sock_fd = socket(AF_INET, SOCK_STREAM, 0)) < 0) {
11 perror("Socket creation error");
14 /* initialize address */
15 memset((void *) &serv_add, 0, sizeof(serv_add)); /* clear server address */
16 serv_add.sin_family = AF_INET; /* address type is INET */
17 serv_add.sin_port = htons(7); /* echo port is 7 */
18 /* build address using inet_pton */
19 if ( (inet_pton(AF_INET, argv[optind], &serv_add.sin_addr)) <= 0) {
20 perror("Address creation error");
23 /* extablish connection */
24 if (connect(sock_fd, (struct sockaddr *)&serv_add, sizeof(serv_add)) < 0) {
25 perror("Connection error");
28 /* read daytime from server */
29 ClientEcho(stdin, sock_fd);