[#SSL_ctrl]
= SSL&lowbar;ctrl
:mrdocs:

Perform a low&hyphen;level control operation on an SSL connection (prefer typed helpers&sol;macros)&period;

== Synopsis

Declared in `&lt;openssl&sol;ssl&period;h&gt;`

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

== Return Value

Command&hyphen;specific long result&semi; see the corresponding SSL&lowbar;CTRL&lowbar;&ast; helper documentation&period;

== Parameters

[cols="1,4"]
|===
| Name| Description
| *ssl*
| SSL connection to manipulate&period;
| *cmd*
| Control command (SSL&lowbar;CTRL&lowbar;&ast; or DTLS&lowbar;CTRL&lowbar;&ast;)&period;
| *larg*
| Integer &sol; size argument whose meaning depends on `cmd&period;`
| *parg*
| Pointer argument whose meaning depends on `cmd&period;`
|===


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