protected string GetClientIP()
{
string ip = null;
string http_x_forwarded_for = Convert.ToString(Request.ServerVariables["HTTP_X_FORWARDED_FOR"]);
string remote_addr = Convert.ToString(Request.ServerVariables["REMOTE_ADDR"]);
if (string.IsNullOrEmpty(http_x_forwarded_for) ||
(http_x_forwarded_for.IndexOf("UNKNOWN") > 0))
{
ip = remote_addr;
}
else if (http_x_forwarded_for.IndexOf(",") > 0)
{
ip = http_x_forwarded_for.Substring(1, http_x_forwarded_for.IndexOf(",") - 1);
}
else if (http_x_forwarded_for.IndexOf(";") > 0)
{
ip = http_x_forwarded_for.Substring(1, http_x_forwarded_for.IndexOf(";") - 1);
}
else
{
ip = http_x_forwarded_for;
}
return ip.Replace(" ", string.Empty);
}
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