Question

如何从原始http请求中获取javascript传递useragent信息（IP地址）？当我运行下面的代码时，我总是收到服务器IP（例如1.2.3.4）地址，就好像它正在发出http请求一样。

的index.html

<!DOCTYPE html>
<html>
<title>ContactForm</title>
<body>
<h1>Contact Form</h1>
<form action="http://1.2.3.4:8080/myaction" method="post" target="_blank">
 Business Name <input type="text" name="businessname"><br>
 User Agent: <input type="text" id="UserAgent" name="useragent">
<input type="submit" value="Submit">
</form>`

node.js代码

app.use(bodyParser.urlencoded({ extended: true })); 
app.post('/myaction', function(req, res) {
  res.send('Thank you for your inquiry, someone will contact you shorty.');

app.get('/', function(request, response){
    response.sendFile('/home/ubuntu/index.html');
});

fs.appendFile(timeEntry+'submission.txt',  'useragent='+JSON.stringify(req.headers)+' ', function(err) {
  if (!err) {
      console.log('Wrote agent headers info to file.txt');
    } else {
      throw err;
    }
  });
app.listen(8080, function() {
  console.log('Server running at http://127.0.0.1:8080/');
});`

Answer 1

以下为我效劳：

app.post('/myaction', function(req, res) {
   console.log(req.ip)
   res.send('Thank you for your inquiry, someone will contact you shorty.');
});

输出：

::ffff:17.###.##.##

值得一提的是我的设置中涉及的两台独立的机器（单独的IP），仅在这种情况下，用户代理IP与服务器IP地址不同。

如果浏览器（useragent）和节点服务器是同一台机器，显然你将获得与html action="http://17.###.##.##:7777/myaction"

相同的IP

修改后的'server.js'文件内容：

var express = require('express'),
path = require('path'),
fs = require('fs'),
bodyParser = require('body-parser')

var app = express();
app.use(bodyParser.urlencoded({ extended: true })); // for parsing application/x-www-form-urlencoded
app.use(express.static(path.join(__dirname, 'server/public')));

app.post('/myaction', function(req, res) {
    console.log(req.ip)
    res.send('Thank you for your inquiry, someone will contact you shorty.');

    fs.appendFile('submission.txt',  'useragent='+JSON.stringify(req.headers)+' ', function(err) {
      if (!err) {
          console.log('Wrote agent headers info to file.txt');
        } else {
          throw err;
        }
      });
});

app.get('/', function(request, response){
    console.log(request.headers)
    response.sendFile('/index.html');
});

app.listen(7777, function() {
  console.log('Server running at http://127.0.0.1:7777/');
});

submission.txt中的结果数据（此处没有用户代理IP，因为它不在req.headers中）：

useragent={"host":"17.###.##.##:7777","content-type":"application/x-www-form-urlencoded","origin":"http://localhost:7777","content-length":"24","connection":"keep-alive","accept":"text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8","user-agent":"Mozilla/5.0 (Macintosh; Intel Mac OS X 10_10_5) AppleWebKit/601.3.9 (KHTML, like Gecko) Version/9.0.2 Safari/601.3.9","referer":"http://localhost:7777/","accept-language":"en-us","accept-encoding":"gzip, deflate"}

nodejs和javascript useragent行为

1 个答案: