所需场景简化如下：访问80，转发到81，在81端口这里如何能获取到真实的客户端IP？
官方说是通过realip模块就可以，但是我设置了，在81这里的$remote_addr仍然是本机地址127.0.0.1；
我用官方的nginx和openresty都试过，无法直接通过remote_addr获取。

配置部分如下：

server {
    listen       80;
    server_name  localhost;

    location / {
        proxy_set_header X-Real-IP $remote_addr;
        proxy_set_header X-Forwarded-For $remote_addr;
        proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;

    proxy_pass http://127.0.0.1:81/;
    }
}

server {
    listen       81;
server_name  localhost;

location / {
        set_real_ip_from 127.0.0.1;
        real_ip_header    X-Forwarded-For;
        real_ip_recursive on;

    return 200 $remote_addr;
}
}
    7 days later

    应该是return 早于 realip模块执行
    `
    http {
    access_log logs/access.log;

    server {
listen       80;
server_name  localhost;

location / {
    proxy_pass http://127.0.0.1:81/;
    proxy_set_header X-Real-IP $remote_addr;
    proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;

}

    }

    server {
    listen       81;
    server_name  localhost;

    location / {

        set_real_ip_from 127.0.0.1;
        real_ip_header   X-Forwarded-For;
        real_ip_recursive on;

        access_by_lua_block {
            ngx.say(ngx.var.remote_addr)
            return ngx.exit(200)
        }
    }
}

    }

    `

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