[Python-Dev] Pervasive socket failures on Windows

[Tim Peters]

[Scott Dial]
> This begs the question then whether the check that is implemented has
> any relevance to any platform other than Linux. I am no portability
> guru, but I have to think there are other platforms where this patch
> will cause problems. For now at least, can we at least do some
> preprocessing magic to not use this code with Windows?

We _have_ to gut this patch on Windows, because Python code using
sockets on Windows no longer works.  That can't stand.  Indeed, I'm
half tempted to revert the checkin right now since Python's test suite
fails or hangs on Windows in test after test now.  This at least
blocks me from doing work I wanted to do (instead I spent the time
allocated for that staring at test failures).

I suggest skipping the new crud conditionalized on a symbol like

    Py_SOCKET_FD_CAN_BE_GE_FD_SETSIZE

The Windows pyconfig.h can #define that, and other platforms can
ignore its possible existence.  If it applies to some Unix variant
too, fine, that variant can also #define it.  No idea here what the
story is on, e.g., Cygwin or OS2.