proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
proxy_set_header X-Real-IP $remote_addr;
proxy_set_header Host $host;
proxy_pass http://ip:port;
引用X-Forwarded-For和X-Real-IP
$http_x_forwarded_for
$http_x_real_ip
nginx中X-Forwarded-For和X-Real-IP设置
原文：https://www.cnblogs.com/dissipate/p/13336414.html