标头不显示IP地址？

Question

{ host: '127.0.0.1:8080',
  connection: 'keep-alive',
  'cache-control': 'max-age=0',
  'user-agent': 'Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Ubuntu Chromium/44.0.2403.89 Chrome/44.0.2403.89 Safari/537.36',
  accept: '*/*',
  referer: 'http://127.0.0.1:8080/',
  'accept-encoding': 'gzip, deflate, sdch',
  'accept-language': 'en-US,en;q=0.8',
  cookie: 'io=bP2eXrqS3SkWYY4cAAAC11' }

I am using koa.io from npm to try and get the ip address of the client connecting. when I try the following code the above is printed in the console. I can't seem to get the ip address of the client.

app.io.use(function* userLeft(next) {
    // on connect
    console.log(this.headers);
});

I am currently on localhost. SO I am expecting the client ip address to be 127.0.0.1?

Answer 1

Try this.request.ip . It should work...

after testing i realized two things.

1. when behind a proxy, make sure the proxy is forwarding the clients ip using an x-forwarded-for header.
2. in theory 1. should be enough for this.request.ip to return the client ip, but it isn't. But after configuring my proxy, this.request.header["x-forwarded-for"] returns the client ip

test with this simple server:

var koa = require('koa');
var app = koa();

app.use(function *(){
this.body = this.request.ip;
});

app.listen(3000);