Update files for OpenSSL-1.0.0f import.
[dragonfly.git] / secure / lib / libssl / man / SSL_CTX_set_timeout.3
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124.\" ========================================================================
125.\"
126.IX Title "SSL_CTX_set_timeout 3"
e3261593 127.TH SSL_CTX_set_timeout 3 "2012-01-04" "1.0.0f" "OpenSSL"
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128.\" For nroff, turn off justification. Always turn off hyphenation; it makes
129.\" way too many mistakes in technical documents.
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131.nh
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132.SH "NAME"
133SSL_CTX_set_timeout, SSL_CTX_get_timeout \- manipulate timeout values for session caching
134.SH "SYNOPSIS"
e056f0e0 135.IX Header "SYNOPSIS"
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136.Vb 1
137\& #include <openssl/ssl.h>
e257b235 138\&
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139\& long SSL_CTX_set_timeout(SSL_CTX *ctx, long t);
140\& long SSL_CTX_get_timeout(SSL_CTX *ctx);
141.Ve
142.SH "DESCRIPTION"
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143.IX Header "DESCRIPTION"
144\&\fISSL_CTX_set_timeout()\fR sets the timeout for newly created sessions for
145\&\fBctx\fR to \fBt\fR. The timeout value \fBt\fR must be given in seconds.
984263bc 146.PP
e056f0e0 147\&\fISSL_CTX_get_timeout()\fR returns the currently set timeout value for \fBctx\fR.
984263bc 148.SH "NOTES"
e056f0e0 149.IX Header "NOTES"
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150Whenever a new session is created, it is assigned a maximum lifetime. This
151lifetime is specified by storing the creation time of the session and the
152timeout value valid at this time. If the actual time is later than creation
153time plus timeout, the session is not reused.
154.PP
155Due to this realization, all sessions behave according to the timeout value
156valid at the time of the session negotiation. Changes of the timeout value
157do not affect already established sessions.
158.PP
159The expiration time of a single session can be modified using the
e056f0e0 160\&\fISSL_SESSION_get_time\fR\|(3) family of functions.
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161.PP
162Expired sessions are removed from the internal session cache, whenever
e056f0e0 163\&\fISSL_CTX_flush_sessions\fR\|(3) is called, either
984263bc 164directly by the application or automatically (see
e056f0e0 165\&\fISSL_CTX_set_session_cache_mode\fR\|(3))
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166.PP
167The default value for session timeout is decided on a per protocol
e056f0e0 168basis, see \fISSL_get_default_timeout\fR\|(3).
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169All currently supported protocols have the same default timeout value
170of 300 seconds.
171.SH "RETURN VALUES"
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172.IX Header "RETURN VALUES"
173\&\fISSL_CTX_set_timeout()\fR returns the previously set timeout value.
984263bc 174.PP
e056f0e0 175\&\fISSL_CTX_get_timeout()\fR returns the currently set timeout value.
984263bc 176.SH "SEE ALSO"
a7d27d5a 177.IX Header "SEE ALSO"
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178\&\fIssl\fR\|(3),
179\&\fISSL_CTX_set_session_cache_mode\fR\|(3),
180\&\fISSL_SESSION_get_time\fR\|(3),
181\&\fISSL_CTX_flush_sessions\fR\|(3),
182\&\fISSL_get_default_timeout\fR\|(3)