[#BIO_get_new_index]
= BIO_get_new_index
:mrdocs:

Allocate a new unique BIO type index for a custom BIO_METHOD.

== Synopsis

Declared in `<openssl/bio.h>`

[source,cpp,subs="verbatim,replacements,macros,-callouts"]
----
int
BIO_get_new_index();
----

== Return Value

New type index in the BIO_TYPE_START range, or a negative value on failure.


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