SSL_get_version(3)

NAME

       SSL_get_version - get the protocol version of a connection.

SYNOPSIS

        #include <openssl/ssl.h>

        const char *SSL_get_version(const SSL *ssl);

DESCRIPTION

       SSL_get_version() returns the name of the protocol used for the connec-
       tion ssl. It should only be called after the initial handshake has been
       completed. Prior to that the results returned from this function may be
       unreliable.

RETURN VALUES

       The following strings can be returned:

       SSLv2
           The connection uses the SSLv2 protocol.

       SSLv3
           The connection uses the SSLv3 protocol.

       TLSv1
           The connection uses the TLSv1.0 protocol.

       TLSv1.1
           The connection uses the TLSv1.1 protocol.

       TLSv1.2
           The connection uses the TLSv1.2 protocol.

       unknown
           This indicates an unknown protocol version.

SEE ALSO

       ssl(3)

1.0.2t                            2019-09-10                SSL_get_version(3)