Polly Retry All Exceptions Except Specific Condition

Is there a way in Polly to retry all exceptions apart from those which are specified.. for example:

var p = Policy    .Handle<HttpListenerException>(e => !(e.NativeErrorCode == 1))    .Or<Exception>()    .RetryAsync();

Here i have picked a slightly contrived situation where i would want to NOT retry when the NativeErrorCode == 1?

I initially hoped that this will retry if any value other than 1, and any other Exception dealt with by the .Or<Exception>() ..

What is actually happening, is that the .Or<Exception> will also catch the NativeErrorCode == 1, even though it was excluded from above? I think..

One option i considered, but not tested... (no error checking ;p)

var p = Policy    .Handle<Exception>(e => SomethingMoreComplex(e) == true)    .RetryAsync();private bool SomethingMoreComplex(Exception e){    if (e is HttpListenerException t)    {        if (t.NativeErrorCode == 1) return false;    }    return true;}

is that threadsafe? :|