/// <summary>
/// Unwraps a proxy-encoded message for further processing
/// </summary>
/// <param name="mode">Indicates whether the proxy message includes the length prefix or not</param>
/// <returns>Returns the unwrapped message</returns>
public ReadOnlyMemory <byte> UnwrapMessage(out KdcProxyMessageMode mode)
{
var prefix = KerbMessage.Slice(0, 4).AsLong();
var message = KerbMessage;
if (prefix != KerbMessage.Length - 4)
{
var possibleMessageType = KrbMessage.DetectMessageType(KerbMessage);
if (!possibleMessageType.IsValidMessageType())
{
throw new InvalidOperationException(
$"Proxy message length {prefix} doesn't match actual message length {message.Length}"
);
}
mode = KdcProxyMessageMode.NoPrefix;
}
else
{
message = KerbMessage.Slice(4);
mode = KdcProxyMessageMode.IncludeLengthPrefix;
}
return(message);
}
public ReadOnlyMemory <byte> UnwrapMessage()
{
var length = KerbMessage.Slice(0, 4).AsLong();
var message = KerbMessage.Slice(4);
if (length != message.Length)
{
throw new InvalidOperationException(
$"Proxy message length {length} doesn't match actual message length {message.Length}"
);
}
return(message);
}