proxy_connect_timeout 5s;
proxy_read_timeout    75;
proxy_next_upstream   error;
proxy_set_header      Host              $host;
proxy_set_header      X-Real-IP         $remote_addr;
proxy_set_header      X-Forwarded-For   $proxy_add_x_forwarded_for;
proxy_set_header      X-Forwarded-Proto https;