[#BIO_get_retry_BIO]
= BIO_get_retry_BIO
:mrdocs:

Walk a BIO chain after BIO_should_io_special() and locate the BIO requesting a retry.

== Synopsis

Declared in `<openssl/bio.h>`

[source,cpp,subs="verbatim,replacements,macros,-callouts"]
----
xref:BIO.adoc[BIO]*
BIO_get_retry_BIO(
    xref:BIO.adoc[BIO]* bio,
    int* reason);
----

== Return Value

The BIO in the chain that set the special condition, or NULL if none.

== Parameters

[cols="1,4"]
|===
| Name| Description
| *bio*
| Starting BIO (usually the application‐facing filter).
| *reason*
| Receives a BIO_RR_* reason code when non‐NULL.
|===


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