How to get the IPAddress from HostName in c# windows 8 Metro App?

Question

I'm Migrating Windows Form Class Library to Metro App Class Library. In that there's a code-block which gives the IPAddress from the Host Name, below,

IPHostEntry ipHostInfo = Dns.GetHostEntry(Address);   
IPAddress ipAddress = ipHostInfo.AddressList[0];// IPAddress.Parse(address);
IPEndPoint endPoint = new IPEndPoint(ipAddress, Port);

eg:

Address : talk.google.com

ipAddress : xx.xxx.xxx.xx

But I've seen that there is no IPHostEntry or Dns or IPAddress in Metro App System.Net. .

If anybody knows means please tell me the replacement for these in windows 8 metro app.

Here's a pretty roundabout way: http://stackoverflow.com/questions/11216625/how-to-resolve-a-hostname-to-an-ip-address-in-metro-winrt — ta.speot.is, Nov 21 '12 at 09:16
#ta.speot.is, I tried from the above link it gives me an exception like this, "A socket operation was attempted to an unreachable host. (Exception from HRESULT: 0x80072751)". — Gopinath Perumal, Nov 21 '12 at 09:32

score 2 · Answer 1 · answered May 17 '14 at 19:32

using System.Threading.Tasks;

public async static Task<string> ResolveDNS(string remoteHostName)
    {
        if (string.IsNullOrEmpty(remoteHostName))
            return string.Empty;

        string ipAddress = string.Empty;

        try
        {
            IReadOnlyList<EndpointPair> data =
              await DatagramSocket.GetEndpointPairsAsync(new HostName(remoteHostName), "0");

            if (data != null && data.Count > 0)
            {
                foreach (EndpointPair item in data)
                {
                    if (item != null && item.RemoteHostName != null &&
                                  item.RemoteHostName.Type == HostNameType.Ipv4)
                    {
                        return item.RemoteHostName.CanonicalName;
                    }
                }
            }
        }
        catch (Exception ex)
        {
            ipAddress = ex.Message;
        }

        return ipAddress;
    }

score 1 · Accepted Answer · edited May 23 '17 at 12:18

1

check How to resolve a hostname to an IP address in Metro/WinRT? and replace 'http' to https and try.

i.e

await clientSocket.ConnectAsync(serverHost, "https");

edited May 23 '17 at 12:18

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answered Nov 21 '12 at 09:54

Isaiyavan Babu Karan

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How to get the IPAddress from HostName in c# windows 8 Metro App?

2 Answers2