Play Version 2.4.x, Probably 2.5.x+

API Both

Expected Behavior

When an onDoneEnumerating handler is attached to a Result's body Enumerator it should always be invoked when the request completes.

Actual Behavior

In 2.4.x the handler doesn't fire if ServerResultUtils.determineResultStreaming determines it's an invalid situation. The Enumerator isn't run out and the callback is never called. I haven't tested in 2.5.x+ but @gmethvin believes this is probably still an issue there.

Reproducible Test Case

See PR #6097