=head1 SYNOPSIS
+ #include <openssl/async.h>
#include <openssl/ssl.h>
int SSL_waiting_for_async(SSL *s);
SSL_get_all_async_fds() and SSL_get_changed_async_fds() return 1 on success or
0 on error.
+=head1 NOTES
+
+On Windows platforms the openssl/async.h header is dependent on some
+of the types customarily made available by including windows.h. The
+application developer is likely to require control over when the latter
+is included, commonly as one of the first included headers. Therefore
+it is defined as an application developer's responsibility to include
+windows.h prior to async.h.
+
=head1 SEE ALSO
L<SSL_get_error(3)>, L<SSL_CTX_set_mode(3)>