使用ngrok隧道时如何获取请求的真实客户端ip

Question

如何确保客户端IP地址由ngrok转发？

由于ngrok，我的测试代码一直坚持认为所有请求都来自127.0.0.1，但我希望记录实际的客户端IP。负载均衡器通常在X-Forwarded- for或x real-ip中设置报头，但我不确定ngrok的过程是什么……

  console.log('req.headers[\'x-real-ip\']', req.headers['x-real-ip']);
  console.log('req.headers[\'X-Forwarded-For\']', req.headers['X-Forwarded-For']);
  console.log('req.ip', req.ip );
  console.log('req.connection.remoteAddress', req.connection.remoteAddress);
  console.log('req.connection.remoteAddress', req.connection.remoteAddress);
  console.log('req.socket.remoteAddress', (req.socket && req.socket.remoteAddress));
  console.log('req.socket.socket.remoteAddress', (req.socket.socket && req.socket.socket.remoteAddress));

到目前为止，所有内容要么打印undefined，要么打印127.0.0.1。这意味着我需要以某种方式配置ngrok。

Answer 1

不幸的是，Node.JS中的所有头名称都是小写的。使用

req.headers['x-forwarded-for']

而不是

req.headers['X-Forwarded-For']