(i.e. ERR_get_error() returns 0), B<ret> can be used to find out more
about the error: If B<ret == 0>, an EOF was observed that violates
the protocol. If B<ret == -1>, the underlying B<BIO> reported an
-I/O error. (For socket I/O on Unix systems, consult B<errno>.)
+I/O error (for socket I/O on Unix systems, consult B<errno> for details).
=item SSL_ERROR_SSL