=over 4
-=item > 0
+=item Z<>0
+
+PSK identity was not found. An "unknown_psk_identity" alert message
+will be sent and the connection setup fails.
+
+=item E<gt>0
PSK identity was found and the server callback has provided the PSK
successfully in parameter B<psk>. Return value is the length of
connection will fail with decryption_error before it will be finished
completely.
-=item 0
-
-PSK identity was not found. An "unknown_psk_identity" alert message
-will be sent and the connection setup fails.
-
=back
=cut