OpenSSL

Cryptography and SSL/TLS Toolkit

SSL_get_version

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 connection 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