Get host name from IP address

I have managed to get the connected clients IP with the code below but can't seem to get the hostname.

Globals.connectedIPAddress = "" + IPAddress.Parse(((
    IPEndPoint)_client.Client.RemoteEndPoint).Add开发者_运维技巧ress.ToString());

Well, not every IP address has a name. However, given the IPAddress you can use Dns.GetHostEntry to try to resolve it. Also note that if it's being a NAT router, you'll be getting the router's IP address rather than their actual machine.

And just to address the point in the comments, I agree that there's no point in ToString/Parse/ToString:

IPAddress address = ((IPEndPoint)_client.Client.RemoteEndPoint).Address;
Globals.connectedIPAddress = address.ToString();