how to get local machine ip address in .net core 2.2

To get Public IP:

public static string GetPublicIP()
{
string myPublicIp = "";
WebRequest request = WebRequest.Create("https://api.ipify.org/");
using (WebResponse response = request.GetResponse())
using (StreamReader stream = new StreamReader(response.GetResponseStream()))
{
myPublicIp = stream.ReadToEnd();
}
return myPublicIp;
}

To Get Local IP:

publicl static string GetLocalIpAddress()
{
UnicastIPAddressInformation mostSuitableIp = null;
var networkInterfaces = NetworkInterface.GetAllNetworkInterfaces();
foreach (var network in networkInterfaces)
{
if (network.OperationalStatus != OperationalStatus.Up)
continue;
var properties = network.GetIPProperties();
if (properties.GatewayAddresses.Count == 0)
continue;
foreach (var address in properties.UnicastAddresses)
{
if (address.Address.AddressFamily != AddressFamily.InterNetwork)
continue;
if (IPAddress.IsLoopback(address.Address))
continue;
if (!address.IsDnsEligible)
{
if (mostSuitableIp == null)
mostSuitableIp = address;
continue;
}
// The best IP is the IP got from DHCP server
if (address.PrefixOrigin != PrefixOrigin.Dhcp)
{
if (mostSuitableIp == null || !mostSuitableIp.IsDnsEligible)
mostSuitableIp = address;
continue;
}
return address.Address.ToString();
}
}
return mostSuitableIp != null
? mostSuitableIp.Address.ToString()
: "";
}

3 Replies

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Archit Shrivastava7y ago
hi Jaimin ,
your code returns server ip not local machine ip
Amit Mohanty7y ago
To get Public IP:
public static string GetPublicIP()
{
    string myPublicIp = "";
    WebRequest request = WebRequest.Create("https://api.ipify.org/");
    using (WebResponse response = request.GetResponse())
    using (StreamReader stream = new StreamReader(response.GetResponseStream()))
    {
        myPublicIp = stream.ReadToEnd();
    }
    return myPublicIp;
}
To Get Local IP:
publicl static string GetLocalIpAddress()
{
    UnicastIPAddressInformation mostSuitableIp = null;
    var networkInterfaces = NetworkInterface.GetAllNetworkInterfaces();
    foreach (var network in networkInterfaces)
    {
        if (network.OperationalStatus != OperationalStatus.Up)
            continue;

        var properties = network.GetIPProperties();
        if (properties.GatewayAddresses.Count == 0)
            continue;

        foreach (var address in properties.UnicastAddresses)
        {
            if (address.Address.AddressFamily != AddressFamily.InterNetwork)
                continue;

            if (IPAddress.IsLoopback(address.Address))
                continue;

            if (!address.IsDnsEligible)
            {
                if (mostSuitableIp == null)
                    mostSuitableIp = address;
                continue;
            }

            // The best IP is the IP got from DHCP server
            if (address.PrefixOrigin != PrefixOrigin.Dhcp)
            {
                if (mostSuitableIp == null || !mostSuitableIp.IsDnsEligible)
                    mostSuitableIp = address;
                continue;
            }
            return address.Address.ToString();
        }
    }
    return mostSuitableIp != null
        ? mostSuitableIp.Address.ToString()
        : "";
}
Jaimin Shethiya7y ago
Hello Archit,

could you please try to below code for get local ip address.

private IPAddress LocalIPAddress()

{

   if (!System.Net.NetworkInformation.NetworkInterface.GetIsNetworkAvailable())

   {

      return null;

   }

   IPHostEntry host = Dns.GetHostEntry(Dns.GetHostName());

   return host

      .AddressList

      .FirstOrDefault(ip => ip.AddressFamily == AddressFamily.InterNetwork);

}

let me know if you have needed any other help from myside.

Thanks