memset((void *)&serv_add, 0, sizeof(serv_add)); /* clear server address */
serv_add.sin_family = AF_INET; /* address type is INET */
serv_add.sin_port = htons(7); /* echo port is 7 */
memset((void *)&serv_add, 0, sizeof(serv_add)); /* clear server address */
serv_add.sin_family = AF_INET; /* address type is INET */
serv_add.sin_port = htons(7); /* echo port is 7 */