1SSL_CTX_add_session(3)              OpenSSL             SSL_CTX_add_session(3)
2
3
4

NAME

6       SSL_CTX_add_session, SSL_add_session, SSL_CTX_remove_session,
7       SSL_remove_session - manipulate session cache
8

SYNOPSIS

10        #include <openssl/ssl.h>
11
12        int SSL_CTX_add_session(SSL_CTX *ctx, SSL_SESSION *c);
13        int SSL_add_session(SSL_CTX *ctx, SSL_SESSION *c);
14
15        int SSL_CTX_remove_session(SSL_CTX *ctx, SSL_SESSION *c);
16        int SSL_remove_session(SSL_CTX *ctx, SSL_SESSION *c);
17

DESCRIPTION

19       SSL_CTX_add_session() adds the session c to the context ctx. The
20       reference count for session c is incremented by 1. If a session with
21       the same session id already exists, the old session is removed by
22       calling SSL_SESSION_free(3).
23
24       SSL_CTX_remove_session() removes the session c from the context ctx.
25       SSL_SESSION_free(3) is called once for c.
26
27       SSL_add_session() and SSL_remove_session() are synonyms for their
28       SSL_CTX_*() counterparts.
29

NOTES

31       When adding a new session to the internal session cache, it is examined
32       whether a session with the same session id already exists. In this case
33       it is assumed that both sessions are identical. If the same session is
34       stored in a different SSL_SESSION object, The old session is removed
35       and replaced by the new session. If the session is actually identical
36       (the SSL_SESSION object is identical), SSL_CTX_add_session() is a no-
37       op, and the return value is 0.
38
39       If a server SSL_CTX is configured with the
40       SSL_SESS_CACHE_NO_INTERNAL_STORE flag then the internal cache will not
41       be populated automatically by new sessions negotiated by the SSL/TLS
42       implementation, even though the internal cache will be searched
43       automatically for session-resume requests (the latter can be suppressed
44       by SSL_SESS_CACHE_NO_INTERNAL_LOOKUP). So the application can use
45       SSL_CTX_add_session() directly to have full control over the sessions
46       that can be resumed if desired.
47

RETURN VALUES

49       The following values are returned by all functions:
50
51       0
52            The operation failed. In case of the add operation, it was tried to add
53            the same (identical) session twice. In case of the remove operation, the
54            session was not found in the cache.
55
56       1
57            The operation succeeded.
58

SEE ALSO

60       ssl(3), SSL_CTX_set_session_cache_mode(3), SSL_SESSION_free(3)
61
62
63
641.0.2o                            2020-01-28            SSL_CTX_add_session(3)
Impressum