Getting the IP address of server in ASP.NET?
Request.ServerVariables["LOCAL_ADDR"];
This gives the IP the request came in on for multi-homed servers
The above is slow as it requires a DNS call (and will obviously not work if one is not available). You can use the code below to get a map of the current pc's local IPV4 addresses with their corresponding subnet mask:
public static Dictionary<IPAddress, IPAddress> GetAllNetworkInterfaceIpv4Addresses()
{
var map = new Dictionary<IPAddress, IPAddress>();
foreach (var ni in NetworkInterface.GetAllNetworkInterfaces())
{
foreach (var uipi in ni.GetIPProperties().UnicastAddresses)
{
if (uipi.Address.AddressFamily != AddressFamily.InterNetwork) continue;
if (uipi.IPv4Mask == null) continue; //ignore 127.0.0.1
map[uipi.Address] = uipi.IPv4Mask;
}
}
return map;
}
warning: this is not implemented in Mono yet
//this gets the ip address of the server pc
public string GetIPAddress()
{
string strHostName = System.Net.Dns.GetHostName();
//IPHostEntry ipHostInfo = Dns.Resolve(Dns.GetHostName()); <-- Obsolete
IPHostEntry ipHostInfo = Dns.GetHostEntry(strHostName);
IPAddress ipAddress = ipHostInfo.AddressList[0];
return ipAddress.ToString();
}
This should work:
//this gets the ip address of the server pc
public string GetIPAddress()
{
IPHostEntry ipHostInfo = Dns.GetHostEntry(Dns.GetHostName()); // `Dns.Resolve()` method is deprecated.
IPAddress ipAddress = ipHostInfo.AddressList[0];
return ipAddress.ToString();
}
http://wec-library.blogspot.com/2008/03/gets-ip-address-of-server-pc-using-c.html
OR
//while this gets the ip address of the visitor making the call
HttpContext.Current.Request.UserHostAddress;
http://www.geekpedia.com/KB32_How-do-I-get-the-visitors-IP-address.html