/// <summary>Reads a remote exception from the stream.</summary>
/// <returns>The remote exception.</returns>
public RemoteException ReadException()
{
Push(InstanceType.Exception);
Debug.Assert(_current != null);
// Read the first slice header, and exception's type ID cannot be null.
string typeId = ReadSliceHeaderIntoCurrent() !;
ReadIndirectionTableIntoCurrent(); // we read the indirection table immediately
while (true)
{
RemoteException?remoteEx = null;
Type? type = Communicator.ResolveClass(typeId);
if (type != null)
{
try
{
remoteEx = (RemoteException?)Activator.CreateInstance(type);
}
catch (Exception ex)
{
throw new InvalidDataException(
@$ "failed to create an instance of type `{type.Name
}' while reading a remote exception with type ID `{typeId}'", ex);
}
}
// We found the exception.
if (remoteEx != null)
{
remoteEx.ConvertToUnhandled = true;
remoteEx.Read(this);
Pop(null);
return(remoteEx);
}
// Slice off what we don't understand.
SkipSlice();
if ((_current.SliceFlags & EncodingDefinitions.SliceFlags.IsLastSlice) != 0)
{
// Create and throw a plain RemoteException with the SlicedData.
Debug.Assert(SlicedData != null);
remoteEx = new RemoteException(SlicedData.Value);
remoteEx.ConvertToUnhandled = true;
return(remoteEx);
}
typeId = ReadSliceHeaderIntoCurrent() !;
ReadIndirectionTableIntoCurrent();
}