[#BIO_asn1_set_suffix]
= BIO_asn1_set_suffix
:mrdocs:

Install suffix encode/free callbacks on a BIO_f_asn1() filter BIO.

== Synopsis

Declared in `<openssl/bio.h>`

[source,cpp,subs="verbatim,replacements,macros,-callouts"]
----
int
BIO_asn1_set_suffix(
    xref:BIO.adoc[BIO]* b,
    xref:asn1_ps_func.adoc[asn1_ps_func]* suffix,
    xref:asn1_ps_func.adoc[asn1_ps_func]* suffix_free);
----

== Return Value

1 on success, or 0 on failure.

== Parameters

[cols="1,4"]
|===
| Name| Description
| *b*
| ASN.1 filter BIO to configure.
| *suffix*
| Callback that writes suffix octets after each ASN.1 item, or NULL.
| *suffix_free*
| Optional cleanup for suffix state, or NULL.
|===


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