manipulate session cache
() adds the session
to the context
. The reference count for session
is incremented by 1. If a session with the
same session id already exists, the old session is removed by calling
() removes the session
from the context
and marks it as non-resumable.
called once for c
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
object, the old session is
removed and replaced by the new session. If the session is actually identical
object is identical),
() is a no-op, and the return
value is 0.
If a server SSL_CTX
is configured with the
the internal cache will not be populated automatically by new sessions
negotiated by the SSL/TLS implementation, even though the internal cache will
be searched automatically for session-resume requests (the latter can be
). So the
application can use SSL_CTX_add_session
directly to have full control over the sessions that can be resumed if
The following values are returned by all functions:
- 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.
- The operation succeeded.