Provided by: libssl-doc_1.1.0g-2ubuntu4_all bug


       SSL_CTX_set_timeout, SSL_CTX_get_timeout - manipulate timeout values for session caching


        #include <openssl/ssl.h>

        long SSL_CTX_set_timeout(SSL_CTX *ctx, long t);
        long SSL_CTX_get_timeout(SSL_CTX *ctx);


       SSL_CTX_set_timeout() sets the timeout for newly created sessions for ctx to t. The
       timeout value t must be given in seconds.

       SSL_CTX_get_timeout() returns the currently set timeout value for ctx.


       Whenever a new session is created, it is assigned a maximum lifetime. This lifetime is
       specified by storing the creation time of the session and the timeout value valid at this
       time. If the actual time is later than creation time plus timeout, the session is not

       Due to this realization, all sessions behave according to the timeout value valid at the
       time of the session negotiation. Changes of the timeout value do not affect already
       established sessions.

       The expiration time of a single session can be modified using the SSL_SESSION_get_time(3)
       family of functions.

       Expired sessions are removed from the internal session cache, whenever
       SSL_CTX_flush_sessions(3) is called, either directly by the application or automatically
       (see SSL_CTX_set_session_cache_mode(3))

       The default value for session timeout is decided on a per protocol basis, see
       SSL_get_default_timeout(3).  All currently supported protocols have the same default
       timeout value of 300 seconds.


       SSL_CTX_set_timeout() returns the previously set timeout value.

       SSL_CTX_get_timeout() returns the currently set timeout value.


       ssl(3), SSL_CTX_set_session_cache_mode(3), SSL_SESSION_get_time(3),
       SSL_CTX_flush_sessions(3), SSL_get_default_timeout(3)


       Copyright 2001-2016 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 <>.