[#BIO_set_shutdown]
= BIO_set_shutdown
:mrdocs:

Set whether BIO_free() should close the underlying I/O resource.

== Synopsis

Declared in `<openssl/bio.h>`

[source,cpp,subs="verbatim,replacements,macros,-callouts"]
----
void
BIO_set_shutdown(
    xref:BIO.adoc[BIO]* a,
    int shut);
----

== Parameters

[cols="1,4"]
|===
| Name| Description
| *a*
| BIO to update.
| *shut*
| Non‐zero to close the underlying descriptor/handle on free; 0 to leave it open.
|===


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