Node.js 如何获取真实 IP？（Nginx 服务器）

在 nginx.conf 中配置

sh

  # 反向代理
  location /api {
    proxy_set_header X-Real-IP $remote_addr; # 获取到与服务器本身直连的上层请求ip
    proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for; # 获取所有的代理ip 客户ip
    proxy_pass http://127.0.0.1:5000; # 后台 API 地址
  }

在 node.js 中获取 ip

js

// const ip = req.headers["x-real-ip"] || req.connection.remoteAddress;
const headers = req.headers;
let ip = req.connection.remoteAddress;
if (headers["x-real-ip"]) {
  ip = headers["x-real-ip"];
}
if (headers["x-forwarded-for"]) {
  const ipList = headers["x-forwarded-for"].split(",");
  ip = ipList[0];
}

请注意，表达小写标头

**