Update copyright year

[openssl.git] / doc / man3 / SSL_CTX_set_info_callback.pod

diff --git a/doc/man3/SSL_CTX_set_info_callback.pod b/doc/man3/SSL_CTX_set_info_callback.pod
index f4d91283fd2ed782218be858a7933831ec41a11f..01b03f9a59ae323dd5a9cdaef48e6cde2dc9b5e5 100644 (file)
--- a/doc/man3/SSL_CTX_set_info_callback.pod
+++ b/doc/man3/SSL_CTX_set_info_callback.pod
@@ -2,7 +2,11 @@
 
 =head1 NAME
 
-SSL_CTX_set_info_callback, SSL_CTX_get_info_callback, SSL_set_info_callback, SSL_get_info_callback - handle information callback for SSL connections
+SSL_CTX_set_info_callback,
+SSL_CTX_get_info_callback,
+SSL_set_info_callback,
+SSL_get_info_callback
+- handle information callback for SSL connections
 
 =head1 SYNOPSIS
 
@@ -37,7 +41,8 @@ callback function for B<ssl>.
 
 When setting up a connection and during use, it is possible to obtain state
 information from the SSL/TLS engine. When set, an information callback function
-is called whenever the state changes, an alert appears, or an error occurs.
+is called whenever a significant event occurs such as: the state changes,
+an alert appears, or an error occurs.
 
 The callback function is called as B<callback(SSL *ssl, int where, int ret)>.
 The B<where> argument specifies information about where (in which context)
@@ -51,12 +56,15 @@ B<where> is a bitmask made up of the following bits:
 
 =item SSL_CB_LOOP
 
-Callback has been called to indicate state change inside a loop.
+Callback has been called to indicate state change or some other significant
+state machine event. This may mean that the callback gets invoked more than once
+per state in some situations.
 
 =item SSL_CB_EXIT
 
-Callback has been called to indicate error exit of a handshake function.
-(May be soft error with retry option for non-blocking setups.)
+Callback has been called to indicate exit of a handshake function. This will
+happen after the end of a handshake, but may happen at other times too such as
+on error or when IO might otherwise block and non-blocking is being used.
 
 =item SSL_CB_READ
 
@@ -84,11 +92,13 @@ Callback has been called due to an alert being sent or received.
 
 =item SSL_CB_HANDSHAKE_START
 
-Callback has been called because a new handshake is started.
+Callback has been called because a new handshake is started. It also occurs when
+resuming a handshake following a pause to handle early data.
 
-=item SSL_CB_HANDSHAKE_DONE           0x20
+=item SSL_CB_HANDSHAKE_DONE
 
-Callback has been called because a handshake is finished.
+Callback has been called because a handshake is finished.  It also occurs if the
+handshake is paused to allow the exchange of early data.
 
 =back
 
@@ -146,7 +156,7 @@ L<SSL_alert_type_string(3)>
 
 =head1 COPYRIGHT
 
-Copyright 2001-2016 The OpenSSL Project Authors. All Rights Reserved.
+Copyright 2001-2019 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