=head1 DESCRIPTION
-SSL_connect() initiates the TLS handshake with a server. The communication
+SSL_connect() initiates the TLS/SSL handshake with a server. The communication
channel must already have been set and assigned to the B<ssl> by setting an
-underlying B<BIO>. The behavior of SSL_connect() depends on the underlying
-BIO.
+underlying B<BIO>.
+
+=head1 NOTES
+
+The behaviour of SSL_connect() depends on the underlying BIO.
If the underlying BIO is B<blocking>, SSL_connect() will only return once the
handshake has been finished or an error occurred.
If the underlying BIO is B<non-blocking>, SSL_connect() will also return
when the underlying BIO could not satisfy the needs of SSL_connect()
-to continue the handshake. In this case a call to SSL_get_error() with the
+to continue the handshake, indicating the problem by the return value -1.
+In this case a call to SSL_get_error() with the
return value of SSL_connect() will yield B<SSL_ERROR_WANT_READ> or
B<SSL_ERROR_WANT_WRITE>. The calling process then must repeat the call after
taking appropriate action to satisfy the needs of SSL_connect().
=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 -1
+=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
at the protocol level or a connection failure occurred. The shutdown was
=head1 SEE ALSO
L<SSL_get_error(3)|SSL_get_error(3)>, L<SSL_accept(3)|SSL_accept(3)>,
-L<SSL_shutdown(3)|SSL_shutdown(3)>, L<ssl(3)|ssl(3)> , L<bio(3)|bio(3)>
+L<SSL_shutdown(3)|SSL_shutdown(3)>, L<ssl(3)|ssl(3)>, L<bio(3)|bio(3)>,
+L<SSL_set_connect_state(3)|SSL_set_connect_state(3)>,
+L<SSL_do_handshake(3)|SSL_do_handshake(3)>,
+L<SSL_CTX_new(3)|SSL_CTX_new(3)>
=cut