Sorry, @nsiregar and @zooba, I could not cleanly backport this to 3.8 due to a conflict.
Please backport using cherry_picker on command line. cherry_picker 71ea688d662a74ddf39a3874e06c73e58df55c02 3.8
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completing WSA error codes based on https://docs.microsoft.com/en-us/windows/win32/winsock/windows-sockets-error-codes-2
https://bugs.python.org/issue11953