[#SSL_SESSION_get_id]
= SSL_SESSION_get_id
:mrdocs:

Return the session identifier bytes of an SSL_SESSION.

== Synopsis

Declared in `<openssl/ssl.h>`

[source,cpp,subs="verbatim,replacements,macros,-callouts"]
----
unsigned char const*
SSL_SESSION_get_id(
    xref:SSL_SESSION.adoc[SSL_SESSION] const* s,
    unsigned int* len);
----

== Return Value

Pointer to the internal session‐id bytes (do not free).

== Parameters

[cols="1,4"]
|===
| Name| Description
| *s*
| Session to query.
| *len*
| If non‐NULL, receives the session‐id length in bytes (0..SSL_MAX_SSL_SESSION_ID_LENGTH).
|===


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