rpl_shutdown (int fd, int how)
{
SOCKET sock = FD_TO_SOCKET (fd);
- int r = shutdown (sock, how);
- if (r < 0)
- set_winsock_errno ();
- return r;
+ if (sock == INVALID_SOCKET)
+ {
+ errno = EBADF;
+ return -1;
+ }
+ else
+ {
+ int r = shutdown (sock, how);
+ if (r < 0)
+ set_winsock_errno ();
+
+ return r;
+ }
}