Question

我最近在Heroku上使用Express和socket.io托管了我的第一个Node应用程序，需要找到客户端的IP地址。到目前为止，我已经尝试了socket.manager.handshaken[socket.id].address，socket.handshake.address和socket.connection.address，两者都没有给出正确的地址。

App：http://nes-chat.herokuapp.com/（还包含指向GitHub repo的链接）

查看已连接用户的IP：http://nes-chat.herokuapp.com/users

任何人都知道问题是什么？

Answer 1

客户端IP地址在X-Forwarded-For HTTP标头中传递。我没有测试过，但是在确定客户端IP时它是looks like socket.io already takes this into account。

你也应该自己抓住它，这是一个guide：

function getClientIp(req) {
  var ipAddress;
  // Amazon EC2 / Heroku workaround to get real client IP
  var forwardedIpsStr = req.header('x-forwarded-for'); 
  if (forwardedIpsStr) {
    // 'x-forwarded-for' header may return multiple IP addresses in
    // the format: "client IP, proxy 1 IP, proxy 2 IP" so take the
    // the first one
    var forwardedIps = forwardedIpsStr.split(',');
    ipAddress = forwardedIps[0];
  }
  if (!ipAddress) {
    // Ensure getting client IP address still works in
    // development environment
    ipAddress = req.connection.remoteAddress;
  }
  return ipAddress;
};

Answer 2

你可以在一行中完成。

function getClientIp(req) {
    // The X-Forwarded-For request header helps you identify the IP address of a client when you use HTTP/HTTPS load balancer.
    // http://docs.aws.amazon.com/ElasticLoadBalancing/latest/DeveloperGuide/TerminologyandKeyConcepts.html#x-forwarded-for
    // If the value were "client, proxy1, proxy2" you would receive the array ["client", "proxy1", "proxy2"]
    // http://expressjs.com/4x/api.html#req.ips
    var ip = req.headers['x-forwarded-for'] ? req.headers['x-forwarded-for'].split(',')[0] : req.connection.remoteAddress;
    console.log('IP: ', ip);
}

我想将其添加到中间件并将IP作为我自己的自定义对象附加到请求中。

Answer 3

以下对我有用。

Var client = require('socket.io').listen(8080).sockets;

client.on('connection',function(socket){ 
var clientIpAddress= socket.request.socket.remoteAddress;
});

如何将客户端的正确IP地址转换为Heroku上托管的Node socket.io应用程序？

3 个答案: