static ChainValidationHelper ()
{
revocation_mode = X509RevocationMode.NoCheck;
try {
string str = Environment.GetEnvironmentVariable ("MONO_X509_REVOCATION_MODE");
if (String.IsNullOrEmpty (str))
return;
revocation_mode = (X509RevocationMode) Enum.Parse (typeof (X509RevocationMode), str, true);
} catch {
}
}