WSAEBADF - Error 10009

Question/Problem: WSAEBADF (10009) Bad file descriptor

Answer/Solution: A file descriptor argument was out of range, referred to no open file, or a read (write) request was made to a file that was only open for writing (reading).

WinSock description: No equivalent in WinSock. However, because a BSD socket is equivalent to a file handle, some Windows Sockets platforms provide some file handle and socket equivalency. In this case, the WSAEBADF error might mean the same as a WSAENOTSOCK error.