1 files changed, 84 insertions, 0 deletions
diff --git a/doc/man3/SSL_clear.pod b/doc/man3/SSL_clear.pod
new file mode 100644
index 0000000000..ed0ad60cbe
--- /dev/null
+++ b/doc/man3/SSL_clear.pod
@@ -0,0 +1,84 @@
+=pod
+
+=head1 NAME
+
+SSL_clear - reset SSL object to allow another connection
+
+=head1 SYNOPSIS
+
+ #include <openssl/ssl.h>
+
+ int SSL_clear(SSL *ssl);
+
+=head1 DESCRIPTION
+
+Reset B<ssl> to allow another connection. All settings (method, ciphers,
+BIOs) are kept.
+
+=head1 NOTES
+
+SSL_clear is used to prepare an SSL object for a new connection. While all
+settings are kept, a side effect is the handling of the current SSL session.
+If a session is still B<open>, it is considered bad and will be removed
+from the session cache, as required by RFC2246. A session is considered open,
+if L<SSL_shutdown(3)> was not called for the connection
+or at least L<SSL_set_shutdown(3)> was used to
+set the SSL_SENT_SHUTDOWN state.
+
+If a session was closed cleanly, the session object will be kept and all
+settings corresponding. This explicitly means, that e.g. the special method
+used during the session will be kept for the next handshake. So if the
+session was a TLSv1 session, a SSL client object will use a TLSv1 client
+method for the next handshake and a SSL server object will use a TLSv1
+server method, even if TLS_*_methods were chosen on startup. This
+will might lead to connection failures (see L<SSL_new(3)>)
+for a description of the method's properties.
+
+=head1 WARNINGS
+
+SSL_clear() resets the SSL object to allow for another connection. The
+reset operation however keeps several settings of the last sessions
+(some of these settings were made automatically during the last
+handshake). It only makes sense for a new connection with the exact
+same peer that shares these settings, and may fail if that peer
+changes its settings between connections. Use the sequence
+L<SSL_get_session(3)>;
+L<SSL_new(3)>;
+L<SSL_set_session(3)>;
+L<SSL_free(3)>
+instead to avoid such failures
+(or simply L<SSL_free(3)>; L<SSL_new(3)>
+if session reuse is not desired).
+
+=head1 RETURN VALUES
+
+The following return values can occur:
+
+=over 4
+
+=item Z<>0
+
+The SSL_clear() operation could not be performed. Check the error stack to
+find out the reason.
+
+=item Z<>1
+
+The SSL_clear() operation was successful.
+
+=back
+
+L<SSL_new(3)>, L<SSL_free(3)>,
+L<SSL_shutdown(3)>, L<SSL_set_shutdown(3)>,
+L<SSL_CTX_set_options(3)>, L<ssl(3)>,
+L<SSL_CTX_set_client_cert_cb(3)>
+
+=head1 COPYRIGHT
+
+Copyright 2000-2016 The OpenSSL Project Authors. All Rights Reserved.
+
+Licensed under the OpenSSL license (the "License").  You may not use
+this file except in compliance with the License.  You can obtain a copy
+in the file LICENSE in the source distribution or at
+L<https://www.openssl.org/source/license.html>.
+
+=cut