SSL_CTX_sessions - access internal session cache
 #include <openssl/ssl.h>
 LHASH_OF(SSL_SESSION) *SSL_CTX_sessions(SSL_CTX *ctx);
SSL_CTX_sessions() returns a pointer to the lhash databases containing
  the internal session cache for ctx.
The sessions in the internal session cache are kept in an LHASH(3) type
  database. It is possible to directly access this database e.g. for searching.
  In parallel, the sessions form a linked list which is maintained separately
  from the LHASH(3) operations, so that the database must not be modified
  directly but by using the SSL_CTX_add_session(3) family of functions.
SSL_CTX_sessions() returns a pointer to the lhash of SSL_SESSION.
ssl(7), LHASH(3), SSL_CTX_add_session(3),
  SSL_CTX_set_session_cache_mode(3)
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Licensed under the Apache License 2.0 (the "License").
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