[#SSL_ctrl]
= SSL_ctrl
:mrdocs:

Perform a low‐level control operation on an SSL connection (prefer typed helpers/macros).

== Synopsis

Declared in `<openssl/ssl.h>`

[source,cpp,subs="verbatim,replacements,macros,-callouts"]
----
long
SSL_ctrl(
    xref:SSL.adoc[SSL]* ssl,
    int cmd,
    long larg,
    void* parg);
----

== Return Value

Command‐specific long result; see the corresponding SSL_CTRL_* helper documentation.

== Parameters

[cols="1,4"]
|===
| Name| Description
| *ssl*
| SSL connection to manipulate.
| *cmd*
| Control command (SSL_CTRL_* or DTLS_CTRL_*).
| *larg*
| Integer / size argument whose meaning depends on `cmd.`
| *parg*
| Pointer argument whose meaning depends on `cmd.`
|===


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