=back
-If a generic method is used, it is necessary to explicitly set client or
-server mode with L<SSL_set_connect_state(3)|SSL_set_connect_state(3)>
-or SSL_set_accept_state().
-
The list of protocols available can later be limited using the SSL_OP_NO_SSLv2,
SSL_OP_NO_SSLv3, SSL_OP_NO_TLSv1 options of the B<SSL_CTX_set_options()> or
B<SSL_set_options()> functions. Using these options it is possible to choose
condition. When using a buffering BIO, like a BIO pair, data must be written
into or retrieved out of the BIO before being able to continue.
-When using a generic method (see L<SSL_CTX_new(3)|SSL_CTX_new(3)>), it
-is necessary to call SSL_set_accept_state()
-before calling SSL_accept() to explicitly switch the B<ssl> to server
-mode.
-
=head1 RETURN VALUES
The following return values can occur:
condition. When using a buffering BIO, like a BIO pair, data must be written
into or retrieved out of the BIO before being able to continue.
-When using a generic method (see L<SSL_CTX_new(3)|SSL_CTX_new(3)>), it
-is necessary to call L<SSL_set_connect_state(3)|SSL_set_connect_state(3)>
-before calling SSL_connect() to explicitly switch the B<ssl> to client
-mode.
-
=head1 RETURN VALUES
The following return values can occur:
underlying BIO.
For the transparent negotiation to succeed, the B<ssl> must have been
-initialized to client or server mode. This is not the case if a generic
-method is being used (see L<SSL_CTX_new(3)|SSL_CTX_new(3)>, so that
+initialized to client or server mode. This is being done by calling
L<SSL_set_connect_state(3)|SSL_set_connect_state(3)> or SSL_set_accept_state()
-must be used before the first call to an SSL_read() or
-L<SSL_write(3)|SSL_write(3)> function).
+before the first call to an SSL_read() or L<SSL_write(3)|SSL_write(3)>
+function.
SSL_read() works based on the SSL/TLS records. The data are received in
records (with a maximum record size of 16kB for SSLv3/TLSv1). Only when a
=head1 DESCRIPTION
-SSL_set_connect_state() B<ssl> to work in client mode.
+SSL_set_connect_state() sets B<ssl> to work in client mode.
-SSL_set_accept_state() B<ssl> to work in server mode.
+SSL_set_accept_state() sets B<ssl> to work in server mode.
=head1 NOTES
L<SSL_CTX_set_ssl_version(3)|SSL_CTX_set_ssl_version(3)> or
SSL_set_ssl_method().)
-In order to successfully accomplish the handshake, the SSL routines need
-to know whether they should act in server or client mode. If the generic
-method was used, this is not clear from the method itself and must be set
-with either SSL_set_connect_state() or SSL_set_accept_state(). If these
-routines are not called, the default value set when L<SSL_new(3)|SSL_new(3)>
-is called is server mode.
+When beginning a new handshake, the SSL engine must know whether it must
+call the connect (client) or accept (server) routines. Even though it may
+be clear from the method chosen, whether client or server mode was
+requested, the handshake routines must be explicitly set.
+
+When using the L<SSL_connect(3)|SSL_connect(3)> or
+L<SSL_accept(3)|SSL_accept(3)> routines, the correct handshake
+routines are automatically set. When performing a transparent negotiation
+using L<SSL_write(3)|SSL_write(3)> or L<SSL_read(3)|SSL_read(3)>, the
+handshake routines must be explicitely set in advance using either
+SSL_set_connect_state() or SSL_set_accept_state().
=head1 RETURN VALUES
=head1 SEE ALSO
L<ssl(3)|ssl(3)>, L<SSL_new(3)|SSL_new(3)>, L<SSL_CTX_new(3)|SSL_CTX_new(3)>,
+L<SSL_connect(3)|SSL_connect(3)>, L<SSL_accept(3)|SSL_accept(3)>,
+L<SSL_write(3)|SSL_write(3)>, L<SSL_read(3)|SSL_read(3)>,
L<SSL_CTX_set_ssl_version(3)|SSL_CTX_set_ssl_version(3)>
=cut
underlying BIO.
For the transparent negotiation to succeed, the B<ssl> must have been
-initialized to client or server mode. This is not the case if a generic
-method is being used (see L<SSL_CTX_new(3)|SSL_CTX_new(3)>, so that
+initialized to client or server mode. This is being done by calling
L<SSL_set_connect_state(3)|SSL_set_connect_state(3)> or SSL_set_accept_state()
-must be used before the first call to an L<SSL_read(3)|SSL_read(3)>
-or SSL_write() function.
+before the first call to an L<SSL_read(3)|SSL_read(3)> or SSL_write() function.
If the underlying BIO is B<blocking>, SSL_write() will only return, once the
write operation has been finished or an error occurred, except when a