X-Git-Url: https://git.librecmc.org/?a=blobdiff_plain;f=doc%2Fssl%2FSSL_clear.pod;h=ba192bd518aebed9e3a4089be7b5cab49ef6371d;hb=646e8c1d6b30a2ed080ce5b968b49d234b42644f;hp=8b735d81dcbc8e245e9da6bf038ba9b374fc49da;hpb=8e495e4ac7caa585fe28d3e7c2fe32dd1d3e94a8;p=oweals%2Fopenssl.git

diff --git a/doc/ssl/SSL_clear.pod b/doc/ssl/SSL_clear.pod
index 8b735d81dc..ba192bd518 100644
--- a/doc/ssl/SSL_clear.pod
+++ b/doc/ssl/SSL_clear.pod
@@ -25,18 +25,43 @@ if L<SSL_shutdown(3)|SSL_shutdown(3)> was not called for the connection
 or at least L<SSL_set_shutdown(3)|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 SSLv23_*_methods were chosen on startup. This
+will might lead to connection failures (see L<SSL_new(3)|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)|SSL_get_session(3)>;
+L<SSL_new(3)|SSL_new(3)>;
+L<SSL_set_session(3)|SSL_set_session(3)>;
+L<SSL_free(3)|SSL_free(3)>
+instead to avoid such failures
+(or simply L<SSL_free(3)|SSL_free(3)>; L<SSL_new(3)|SSL_new(3)>
+if session reuse is not desired).
+
 =head1 RETURN VALUES
 
 The following return values can occur:
 
 =over 4
 
-=item 0
+=item Z<>0
 
 The SSL_clear() operation could not be performed. Check the error stack to
 find out the reason.
 
-=item 1
+=item Z<>1
 
 The SSL_clear() operation was successful.
 
@@ -44,6 +69,7 @@ The SSL_clear() operation was successful.
 
 L<SSL_new(3)|SSL_new(3)>, L<SSL_free(3)|SSL_free(3)>,
 L<SSL_shutdown(3)|SSL_shutdown(3)>, L<SSL_set_shutdown(3)|SSL_set_shutdown(3)>,
-L<SSL_CTX_set_options(3)|SSL_CTX_set_options(3)>, L<ssl(3)|ssl(3)>
+L<SSL_CTX_set_options(3)|SSL_CTX_set_options(3)>, L<ssl(3)|ssl(3)>,
+L<SSL_CTX_set_client_cert_cb(3)|SSL_CTX_set_client_cert_cb(3)>
 
 =cut