https://bugs.winehq.org/show_bug.cgi?id=51442
--- Comment #19 from Roman Pišl rpisl@seznam.cz --- Hi Zabediah, you were right - the issue is not the same. But thanks to your recent fixes, it starts to clarify! The problem is when connecting a socket in non-blocking mode. It fails multiple times with WSAECONNREFUSED (10061), but why if on localhost? Then, if it succeeds, the socket is switched back to blocking mode by the app but is never marked as ready for writing. I'll compare the behavior with Windows and prepare some test after the weekend.