[#SSL_extension_supported]
= SSL&lowbar;extension&lowbar;supported
:mrdocs:

Report whether OpenSSL has built&hyphen;in handling for a TLS extension type&period;

== Synopsis

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

[source,cpp,subs="verbatim,replacements,macros,-callouts"]
----
int
SSL&lowbar;extension&lowbar;supported(unsigned int ext&lowbar;type);
----

== Return Value

1 if the extension is known&sol;handled internally, or 0 otherwise&period;

== Parameters

[cols="1,4"]
|===
| Name| Description
| *ext&lowbar;type*
| TLS extension type code&period;
|===


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