private void StartReadFragment(bool isFirstFragment)
{
if (_fragmentHeader != null)
{
throw new Exception("Logic error");
}
var dataReader = new BinaryDataReader(_connection.Input, ByteOrder.BigEndian);
var fragmentHeader = FragmentHeader.ReadFrom(dataReader);
if (_connection.TraceWriter != null)
{
NetUtils.TraceOutput(_connection.TraceWriter, $"PC {fragmentHeader.PresentationContextID} received ", fragmentHeader);
_connection.TraceWriter.Flush();
}
if (!isFirstFragment && (fragmentHeader.PresentationContextID != PresentationContextID))
{
throw new IOException($"Expected presentation context ID {PresentationContextID} but got {_fragmentHeader.PresentationContextID}");
}
if (fragmentHeader.FragmentType != _fragmentType)
{
throw new IOException($"Expected {_fragmentType} but got {fragmentHeader.FragmentType}");
}
_fragmentHeader = fragmentHeader;
_fragmentEndPosition = _connection.Input.Position + (fragmentHeader.Length - 2);
}
private void EndReadFragment(out bool wasLastFragment)
{
if (_fragmentHeader == null)
{
throw new Exception("Logic error");
}
if (_connection.Input.Position != _fragmentEndPosition)
{
throw new Exception("Logic error");
}
wasLastFragment = _fragmentHeader.IsLastFragment;
_fragmentHeader = null;
_fragmentEndPosition = 0;
}
