# File lib/gelf/transport/tcp_tls.rb, line 99
      def tls_version
        if @tls_options.key?('version') &&
            OpenSSL::SSL::SSLContext::METHODS.include?(@tls_options['version']) &&
            @tls_options['version'] =~ /\ATLSv/
          @tls_options['version']
        else
          :TLSv1_2
        end
      end