使用getaddrinfo和getnameinfo获取地址信息和主机信息-This sample illustrates how to use the new name resolution APIs:

//　　　getaddrinfo and getnameinfo. This sample takes a hostname or address

//　　　and performs an address resolution via getaddrinfo. This lookup will

//　　　return one or more binary addresses which will then be passed to

//　　　getnameinfo to perform a reverse lookup. The results of each query

//　　　are displayed to the console.