c# - dns.gethostbyname()

Question

网上查了dns gethostbyname改成gethostentry，修改了代码，为什么还是不能显示正常的ipv4地址？这是我的代码:

string GetHostIP()
    {      
        String myHostName = System.Net.Dns.GetHostName();

        // Find host by name
        System.Net.IPHostEntry myiphost = System.Net.Dns.GetHostEntry(myHostName);

        String ipstring = "";
        foreach(System.Net.IPAddress myipadd in myiphost.AddressList)
        {
            ipstring = myipadd.ToString();
            return ipstring;
        }
        return ipstring;
    }

Answer 1

他们试图让您停止假设 IP 地址是点分十进制 IPv4 地址。他们只是无法让 IPv6 落地，而这是必要的。几个月前完全没有免费地址。

你可以获得 IPv4 地址，你必须明确地把它捞出来:

        foreach (System.Net.IPAddress myipadd in myiphost.AddressList) {
            if (myipadd.AddressFamily == System.Net.Sockets.AddressFamily.InterNetwork) {
                return myipadd.ToString();

            }
        }
        throw new WhatTheHeckException();