[#SSL_extension_supported]
= SSL_extension_supported
:mrdocs:

Report whether OpenSSL has built‐in handling for a TLS extension type.

== Synopsis

Declared in `<openssl/ssl.h>`

[source,cpp,subs="verbatim,replacements,macros,-callouts"]
----
int
SSL_extension_supported(unsigned int ext_type);
----

== Return Value

1 if the extension is known/handled internally, or 0 otherwise.

== Parameters

[cols="1,4"]
|===
| Name| Description
| *ext_type*
| TLS extension type code.
|===


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