Replace php-fpm by Unit - user certificate information?

Hello,
I want to replace php-fpm by Unit on one internal project. In the same time we want to add an additional security level - use X.509 authentication for users.
When I search the information about configuring php-fpm - I find the following directives to add in nginx.conf:
fastcgi_param SSL_CLIENT_VERIFY $ssl_client_verify;
fastcgi_param SSL_CLIENT_S_DN $ssl_client_s_dn;
But I could not find anything about configuring Unit at the same manner.
Someone can help me with such information, please?
Peter