[Bug 38399] Voobly fails to connect to lobby (threaded app close socket in the middle of other thread select call)

[wine-bugs at winehq.org]

https://bugs.winehq.org/show_bug.cgi?id=38399

--- Comment #3 from Bruno Jesus <00cpxxx at gmail.com> ---
Created attachment 51263
  --> https://bugs.winehq.org/attachment.cgi?id=51263
patch

The attached patch solves the issue, but I'm looking for cheaper ways. The
problem is that all descriptors are duplicated (dup call) for reasons I don't
understand so when we call select with socket A we retrieve handle X from the
server and do the poll, when we close the socket in a second thread it looks
like its duplicated copies are still alive because if I try a getsockopt on the
handle X from inside the select code it still works when I really expected it
to give an error.

The patch ensures the socket really died asking for the server to fetch me its
handle. If anyone understands why the server always duplicate the handle I
would appreciate the explanation.

https://source.winehq.org/source/dlls/ntdll/server.c#0990

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