This returns the underlying OS handle for use directly with OS calls.
Warning:
Do not use this function to directly call the close system call. Doing so may lead to quite difficult to debug problems across your
program. If another part of the program gets the same FD number, it can be quite difficult to find out what went wrong.
Obtain the underlying OS handle
This returns the underlying OS handle for use directly with OS calls.
Warning: Do not use this function to directly call the close system call. Doing so may lead to quite difficult to debug problems across your program. If another part of the program gets the same FD number, it can be quite difficult to find out what went wrong.