获取有网关是 的真正客户端IP 测试过nginx可以获取
location /test/ {
proxy_pass http://localhost:9002/;
proxy_set_header Host $host;
proxy_set_header X-Forwarded-Host $server_name;
proxy_set_header X-Real-IP $remote_addr;
proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
}