nginx nmzsks reverse proxy

nginx.conf

server {
    listen 80;
    server_name nmzsks.daoapp.io;

    location / {
        set  $referer  $http_referer;
        if ($http_referer ~ '^(http://)nmzsks.daoapp.io(/.+)$') {
            set  $referer  $1www1.nm.zsks.cn$2;
        }

        proxy_pass http://www1.nm.zsks.cn;
        proxy_set_header Host "www1.nm.zsks.cn";
        proxy_set_header Accept "text/html,application/xhtml+xml,application/xml;q=0.9,image/webp,*/*;q=0.8";
        proxy_set_header Accept-Encoding "gzip, deflate";
        proxy_set_header Upgrade-Insecure-Requests 1;
        proxy_set_header User-Agent $http_user_agent;
        proxy_set_header Accept-Language "en,zh-CN;q=0.8,zh;q=0.6,en-US;q=0.4";
        proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
        proxy_set_header Referer $referer;
  }
}