指定 协议 和 代理端口

server {
    listen       443;
    server_name  xxx.com;
    ssl on;
    ssl_certificate /etc/nginx/con/xxx.com.pem;
    ssl_certificate_key /etc/nginx/conf/xxx.com.key;
    ssl_protocols       TLSv1 TLSv1.1 TLSv1.2;
    ssl_ciphers         HIGH:!aNULL:!MD5;
 
   location / {
       proxy_pass http://xxx:y;
       proxy_set_header Host $host;
       proxy_set_header  X-Real-IP  $remote_addr;
       proxy_set_header X-Forwarded-For $remote_addr;
       #proxy_set_header Host $host:$server_port;
       proxy_set_header X-Forwarded-Proto $scheme;
       proxy_set_header X-Forwarded-Port $server_port;
   }

}