https://bugs.winehq.org/show_bug.cgi?id=55952
--- Comment #17 from Zeb Figura z.figura12@gmail.com --- (In reply to Esme Povirk from comment #16)
If the problem was that the server (responder) isn't reading the data, wouldn't that cause a client's write to fail?
Writes on a reset connection are supposed to fail, but in this case the write always happens before the shutdown. The zero-byte recv actually makes sure of that.