[#SSL_CTX_get_ex_data]
= SSL_CTX_get_ex_data
:mrdocs:

Retrieve application‐specific data previously stored on an SSL_CTX.

== Synopsis

Declared in `<openssl/ssl.h>`

[source,cpp,subs="verbatim,replacements,macros,-callouts"]
----
void*
SSL_CTX_get_ex_data(
    xref:SSL_CTX.adoc[SSL_CTX] const* ssl,
    int idx);
----

== Return Value

Stored pointer, or NULL if unset.

== Parameters

[cols="1,4"]
|===
| Name| Description
| *ssl*
| SSL_CTX that owns the ex_data table.
| *idx*
| Index from SSL_CTX_get_ex_new_index().
|===


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