static void setEnabledProtocols(long ssl, NativeSsl ssl_holder, String[] protocols) {
        checkEnabledProtocols(protocols);
        Range range = getProtocolRange(protocols);
        SSL_set_protocol_versions(
                ssl, ssl_holder, getProtocolConstant(range.min), getProtocolConstant(range.max));
    }
Protocols to enable by default when "TLSv1" is requested.
common/src/main/java/org/conscrypt/NativeCrypto.java