The behaviour of SSL_accept() depends on the underlying BIO.
If the underlying BIO is B<blocking>, SSL_accept() will only return once the
-handshake has been finished or an error occurred, except for SGC (Server
-Gated Cryptography). For SGC, SSL_accept() may return with -1, but
-SSL_get_error() will yield B<SSL_ERROR_WANT_READ/WRITE> and SSL_accept()
-should be called again.
+handshake has been finished or an error occurred.
If the underlying BIO is B<non-blocking>, SSL_accept() will also return
when the underlying BIO could not satisfy the needs of SSL_accept()
=over 4
-=item 1
-
-The TLS/SSL handshake was successfully completed, a TLS/SSL connection has been
-established.
-
-=item 0
+=item Z<>0
The TLS/SSL handshake was not successful but was shut down controlled and
by the specifications of the TLS/SSL protocol. Call SSL_get_error() with the
return value B<ret> to find out the reason.
+=item Z<>1
+
+The TLS/SSL handshake was successfully completed, a TLS/SSL connection has been
+established.
+
=item E<lt>0
The TLS/SSL handshake was not successful because a fatal error occurred either