In this post, you’ll learn more about the Windows Socket Error WSAENOTSOCK
10038 returned by the WSAGetLastError function in Windows as well a quick description about the error
Windows Socket Error Code
WSAENOTSOCK
10038
Windows Socket Error Description
Socket operation on nonsocket.
An operation was attempted on something that is not a socket. Either the socket handle parameter did not reference a valid socket, or for select, a member of an fd_set was not valid.