[#BIO_ssl_copy_session_id]
= BIO_ssl_copy_session_id
:mrdocs:

Copy the SSL session ID between two BIO chains that contain SSL BIOs.

== Synopsis

Declared in `<openssl/ssl.h>`

[source,cpp,subs="verbatim,replacements,macros,-callouts"]
----
int
BIO_ssl_copy_session_id(
    xref:BIO.adoc[BIO]* to,
    xref:BIO.adoc[BIO]* from);
----

== Return Value

1 on success, or 0 on failure (including QUIC SSL objects).

== Parameters

[cols="1,4"]
|===
| Name| Description
| *to*
| Destination BIO chain whose SSL session is set.
| *from*
| Source BIO chain whose SSL session is copied.
|===


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