xref: /freebsd/secure/lib/libcrypto/man/man3/SSL_free.3 (revision 2bfd8b5b9419b0ceb3dd0295fdf413d32969e5b2)
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Title "SSL_FREE 3"
SSL_FREE 3 "2022-07-05" "1.1.1q" "OpenSSL"
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"NAME"
SSL_free - free an allocated SSL structure
"SYNOPSIS"
Header "SYNOPSIS" .Vb 1 #include <openssl/ssl.h> \& void SSL_free(SSL *ssl); .Ve
"DESCRIPTION"
Header "DESCRIPTION" \fBSSL_free() decrements the reference count of ssl, and removes the \s-1SSL\s0 structure pointed to by ssl and frees up the allocated memory if the reference count has reached 0. If ssl is \s-1NULL\s0 nothing is done.
"NOTES"
Header "NOTES" \fBSSL_free() also calls the free()ing procedures for indirectly affected items, if applicable: the buffering \s-1BIO,\s0 the read and write BIOs, cipher lists specially created for this ssl, the \s-1SSL_SESSION\s0. Do not explicitly free these indirectly freed up items before or after calling SSL_free(), as trying to free things twice may lead to program failure.

The ssl session has reference counts from two users: the \s-1SSL\s0 object, for which the reference count is removed by SSL_free() and the internal session cache. If the session is considered bad, because \fBSSL_shutdown\|(3) was not called for the connection and SSL_set_shutdown\|(3) was not used to set the \s-1SSL_SENT_SHUTDOWN\s0 state, the session will also be removed from the session cache as required by \s-1RFC2246.\s0

"RETURN VALUES"
Header "RETURN VALUES" \fBSSL_free() does not provide diagnostic information.

\fBSSL_new\|(3), SSL_clear\|(3), \fBSSL_shutdown\|(3), SSL_set_shutdown\|(3), \fBssl\|(7)

"COPYRIGHT"
Header "COPYRIGHT" Copyright 2000-2016 The OpenSSL Project Authors. All Rights Reserved.

Licensed under the OpenSSL license (the \*(L"License\*(R"). You may not use this file except in compliance with the License. You can obtain a copy in the file \s-1LICENSE\s0 in the source distribution or at <https://www.openssl.org/source/license.html>.