Comments in win32sck.c led me to GetFileType(), which might be all that's needed, at least to find out whether a file handle might be a socket.

As the code is Win32-specific, and Windows 9x isn't supported anymore, this call could maybe used instead of fstat.

In reply to Re^3: threads + sockets stalling question by Corion
in thread threads + sockets stalling question by BrowserUk

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