add_header Access-Control-Allow-Origin https://xxxxxx.xyz;
    add_header Access-Control-Allow-Methods GET,POST,OPTIONS;
    add_header Access-Control-Allow-Headers DNT,X-Requested-With,If-Modified-Since,Cache-Control,Content-Type,Range;
    add_header Access-Control-Expose-Headers Content-Length,Content-Range;

location / {
    # 将请求转发到本地 xxxx 端口
    proxy_pass http://127.0.0.1:xxxx;
    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 $scheme;
} }