I'm currently using the following function to get external IPv4 address of my client:
public static string GetExternalIP() { try { string externalIP; externalIP = (new WebClient()).DownloadString("http://checkip.dyndns.org/"); externalIP = (new Regex(@"\d{1,3}\.\d{1,3}\.\d{1,3}\.\d{1,3}")) .Matches(externalIP)[0].ToString(); return externalIP; } catch { return null; } } Is there any other way to get the same result without using any external website or services?
protected string GetInternalIP() { System.Web.HttpContext context = System.Web.HttpContext.Current; string ipAddress = context.Request.ServerVariables["HTTP_X_FORWARDED_FOR"]; if (!string.IsNullOrEmpty(ipAddress)) { string[] addresses = ipAddress.Split(','); if (addresses.Length != 0) { return addresses[0]; } } return context.Request.ServerVariables["REMOTE_ADDR"]; } public static string GetExternalIP() { try { string externalIP; externalIP = (new WebClient()).DownloadString("http://checkip.dyndns.org/"); externalIP = (new Regex(@"\d{1,3}\.\d{1,3}\.\d{1,3}\.\d{1,3}")) .Matches(externalIP)[0].ToString(); return externalIP; } catch { return null; } } No. because actually only when you're connecting to a server he can tell you where you come from... so There is not any other option except making a connection to another service. its pretty fast tho... (if this what bothered you..) Hope you understood.
