ssl proxys https web server is very slow

[Yifeng Wang]

Hi, It's my first time using NGINX to proxy other web servers. I set a
variable in location, this variable may be gotten in cookie or args. if
I use it directly likes "proxy_pass https://$nodeIp2;", it will get the
response for a long time. but if I hardcode likes "proxy_pass
https://147.128.22.152:8443" it works normally. Do I need to set more
cofiguration parameters to solve this problem.Below is the segment of my
windows https configuration.

http {
    ...
    server {
       listen       443 ssl;
       server_name  localhost;

       ssl_certificate      server.crt;
       ssl_certificate_key  server.key;

       location /pau6000lct/ {
            set $nodeIp 147.128.22.152:8443;
            proxy_pass https://$nodeIp;

      proxy_set_header   Host               $http_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;
        }
    }
}

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