[#BIO_next]
= BIO_next
:mrdocs:

Return the next BIO in a filter chain after `b.`

== Synopsis

Declared in `<openssl/bio.h>`

[source,cpp,subs="verbatim,replacements,macros,-callouts"]
----
xref:BIO.adoc[BIO]*
BIO_next(xref:BIO.adoc[BIO]* b);
----

== Return Value

Next BIO in the chain, or NULL if `b` is the last / has no next.

== Parameters

[cols="1,4"]
|===
| Name| Description
| *b*
| BIO whose successor is requested.
|===


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