/// <summary>
/// Checks for IP address or well known hostnames that map to the computer.
/// </summary>
/// <param name="hostname">The hostname.</param>
/// <returns>The hostname to use for URL filtering.</returns>
protected string NormalizeHostname(string hostname)
{
string computerName = Utils.GetHostName();
// substitute the computer name for localhost if localhost used by client.
if (Utils.AreDomainsEqual(hostname, "localhost"))
{
return(computerName.ToUpper());
}
// check if client is using an ip address.
IPAddress address = null;
if (System.Net.IPAddress.TryParse(hostname, out address))
{
if (System.Net.IPAddress.IsLoopback(address))
{
return(computerName.ToUpper());
}
// substitute the computer name for any local IP if an IP is used by client.
IPAddress[] addresses = Utils.GetHostAddresses(Utils.GetHostName());
for (int ii = 0; ii < addresses.Length; ii++)
{
if (addresses[ii].Equals(address))
{
return(computerName.ToUpper());
}
}
// not a localhost IP address.
return(hostname.ToUpper());
}
// return normalized hostname.
return(hostname.ToUpper());
}