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Editing: SSL_CTX_add_session.3
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Always turn off hyphenation; it makes .\" way too many mistakes in technical documents. .if n .ad l .nh .SH "NAME" SSL_CTX_add_session, SSL_add_session, SSL_CTX_remove_session, SSL_remove_session \- manipulate session cache .SH "SYNOPSIS" .IX Header "SYNOPSIS" .Vb 1 \& #include <openssl/ssl.h> \& \& int SSL_CTX_add_session(SSL_CTX *ctx, SSL_SESSION *c); \& int SSL_add_session(SSL_CTX *ctx, SSL_SESSION *c); \& \& int SSL_CTX_remove_session(SSL_CTX *ctx, SSL_SESSION *c); \& int SSL_remove_session(SSL_CTX *ctx, SSL_SESSION *c); .Ve .SH "DESCRIPTION" .IX Header "DESCRIPTION" \&\fBSSL_CTX_add_session()\fR adds the session \fBc\fR to the context \fBctx\fR. The reference count for session \fBc\fR is incremented by 1. If a session with the same session id already exists, the old session is removed by calling \&\fBSSL_SESSION_free\fR\|(3). .PP \&\fBSSL_CTX_remove_session()\fR removes the session \fBc\fR from the context \fBctx\fR. \&\fBSSL_SESSION_free\fR\|(3) is called once for \fBc\fR. .PP \&\fBSSL_add_session()\fR and \fBSSL_remove_session()\fR are synonyms for their SSL_CTX_*() counterparts. .SH "NOTES" .IX Header "NOTES" When adding a new session to the internal session cache, it is examined whether a session with the same session id already exists. In this case it is assumed that both sessions are identical. If the same session is stored in a different \s-1SSL_SESSION\s0 object, The old session is removed and replaced by the new session. If the session is actually identical (the \s-1SSL_SESSION\s0 object is identical), \fBSSL_CTX_add_session()\fR is a no-op, and the return value is 0. .PP If a server \s-1SSL_CTX\s0 is configured with the \s-1SSL_SESS_CACHE_NO_INTERNAL_STORE\s0 flag then the internal cache will not be populated automatically by new sessions negotiated by the \s-1SSL/TLS\s0 implementation, even though the internal cache will be searched automatically for session-resume requests (the latter can be suppressed by \s-1SSL_SESS_CACHE_NO_INTERNAL_LOOKUP\s0). So the application can use \fBSSL_CTX_add_session()\fR directly to have full control over the sessions that can be resumed if desired. .SH "RETURN VALUES" .IX Header "RETURN VALUES" The following values are returned by all functions: .IP "0" 4 .Vb 3 \& The operation failed. In case of the add operation, it was tried to add \& the same (identical) session twice. In case of the remove operation, the \& session was not found in the cache. .Ve .IP "1" 4 .IX Item "1" .Vb 1 \& The operation succeeded. .Ve .SH "SEE ALSO" .IX Header "SEE ALSO" \&\fBssl\fR\|(3), \&\fBSSL_CTX_set_session_cache_mode\fR\|(3), \&\fBSSL_SESSION_free\fR\|(3)
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