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.\" ========================================================================
.\"
.IX Title "D2I_SSL_SESSION 3"
.TH D2I_SSL_SESSION 3 "2023-09-11" "1.1.1w" "OpenSSL"
.\" For nroff, turn off justification.  Always turn off hyphenation; it makes
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.nh
.SH "NAME"
d2i_SSL_SESSION, i2d_SSL_SESSION \- convert SSL_SESSION object from/to ASN1 representation
.SH "SYNOPSIS"
.IX Header "SYNOPSIS"
.Vb 1
\& #include <openssl/ssl.h>
\&
\& SSL_SESSION *d2i_SSL_SESSION(SSL_SESSION **a, const unsigned char **pp,
\&                              long length);
\& int i2d_SSL_SESSION(SSL_SESSION *in, unsigned char **pp);
.Ve
.SH "DESCRIPTION"
.IX Header "DESCRIPTION"
These functions decode and encode an \s-1SSL_SESSION\s0 object.
For encoding details see \fBd2i_X509\fR\|(3).
.PP
\&\s-1SSL_SESSION\s0 objects keep internal link information about the session cache
list, when being inserted into one \s-1SSL_CTX\s0 object's session cache.
One \s-1SSL_SESSION\s0 object, regardless of its reference count, must therefore
only be used with one \s-1SSL_CTX\s0 object (and the \s-1SSL\s0 objects created
from this \s-1SSL_CTX\s0 object).
.SH "RETURN VALUES"
.IX Header "RETURN VALUES"
\&\fBd2i_SSL_SESSION()\fR returns a pointer to the newly allocated \s-1SSL_SESSION\s0
object. In case of failure the NULL-pointer is returned and the error message
can be retrieved from the error stack.
.PP
\&\fBi2d_SSL_SESSION()\fR returns the size of the \s-1ASN1\s0 representation in bytes.
When the session is not valid, \fB0\fR is returned and no operation is performed.
.SH "SEE ALSO"
.IX Header "SEE ALSO"
\&\fBssl\fR\|(7), \fBSSL_SESSION_free\fR\|(3),
\&\fBSSL_CTX_sess_set_get_cb\fR\|(3),
\&\fBd2i_X509\fR\|(3)
.SH "COPYRIGHT"
.IX Header "COPYRIGHT"
Copyright 2001\-2016 The OpenSSL Project Authors. All Rights Reserved.
.PP
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>.