SSL_net_read_desired(), SSL_net_write_desired(), SSL_get_rpoll_descriptor(),
SSL_get_wpoll_descriptor() and SSL_get_event_timeout().
-These functions are not supported on non-QUIC SSL objects.
+On non-QUIC SSL objects, calls to SSL_get_rpoll_descriptor() and
+SSL_get_wpoll_descriptor() function the same as calls to
+BIO_get_rpoll_descriptor() and BIO_get_wpoll_descriptor() on the respective read
+and write BIOs configured on the SSL object.
+
+On non-QUIC SSL objects, calls to SSL_net_read_desired() and
+SSL_net_write_desired() function identically to calls to SSL_want_read() and
+SSL_want_write() respectively.
=head1 RETURN VALUES