socket.getaddrinfo("http://www.news.com",None)
when you try to parser dns,can not start with http://,
belows is the right way
socket.getaddrinfo("www.xx.com",None)
public interface IStack<T> {
//元素出栈,并返回出栈元素
public T pop();
//元素入栈
public void push(T element);
//获取栈顶元素
public T peek();
//判断栈是否为空
public boolean isEmpty