set a TLS/SSL session to be used during
sets session to be used when the TLS/SSL connection is
to be established.
SSL_set_session() is only useful
for TLS/SSL clients. When the session is set, the reference count of
session is incremented by 1. If the session is not
reused, the reference count is decremented again during
Whether the session was reused can be queried with the
If there is already a session set inside
ssl (because it was set with
before or because the same ssl was already used for a
SSL_SESSION_free(3) will be called for that session.
SSL_SESSION objects keep internal link information about the session cache list when being inserted into one SSL_CTX object's session cache. One SSL_SESSION object, regardless of its reference count, must therefore only be used with one SSL_CTX object (and the SSL objects created from this SSL_CTX object).
The following return values can occur:
- The operation failed; check the error stack to find out the reason.
- The operation succeeded.
ssl(3), SSL_CTX_set_session_cache_mode(3), SSL_get_session(3), SSL_SESSION_free(3), SSL_session_reused(3)
SSL_set_session() first appeared in SSLeay
0.5.2 and has been available since OpenBSD 2.4.