[#SSL_client_version]
= SSL_client_version
:mrdocs:

Return the numeric protocol version advertised by the client in ClientHello.

== Synopsis

Declared in `<openssl/ssl.h>`

[source,cpp,subs="verbatim,replacements,macros,-callouts"]
----
int
SSL_client_version(xref:SSL.adoc[SSL] const* s);
----

== Return Value

Legacy ClientHello version (never greater than TLSv1.2 for TLS), or OSSL_QUIC1_VERSION for QUIC.

== Parameters

[cols="1,4"]
|===
| Name| Description
| *s*
| SSL connection to query.
|===


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