Getting host name of client url in node.js

Question

I am sending data from JavaScript client to node.js server using XMLHttpRequest ajax. Now on server side I need to know the host of URL of the page the JavaScript calling XMLHttpRequest is embedded in.

Server side:

req.on('data', function(data) {
  var d = JSON.parse(data);
  if (d.Type == "abc") {
    var host = req.headers.Host;
    var reply = {
      "hostname": host
    };
    console.log("hostname :" + host);
    response.end(JSON.Stringify(reply));
  }
});

Expected result on console: hostname: hostname

Actual result on console: hostname: undefined

What is the question ? What is not working as you expect it to work ? — Rayon
– Rayon, Commented Dec 29, 2015 at 11:21
What do you mean by "client's url". Clients don't have URLs! Do you mean the hostname of the computer the request is coming from? Do you mean the URL of the page the JavaScript calling XMLHttpRequest is embedded in? Something else? — Quentin
– Quentin, Commented Dec 29, 2015 at 11:40
Yes @Quentin, i mean "client's url" as the second option suggested by you, thanks. — himesh
– himesh, Commented Dec 29, 2015 at 11:44

Quentin · Accepted Answer · 2015-12-29 11:45:07Z

2

Browsers include a Referer HTTP Request header as normal for XHR requests. You can examine that.

answered Dec 29, 2015 at 11:45

Quentin

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1 Comment

himesh Over a year ago

Thanks @Quentin , referer works as var url=req.headers.referer gives full url and url.split("//")[2] gives domain name.

James Serengia · Accepted Answer · 2022-11-21 03:38:05Z

0

Try this

const clientUrl = req.header('Referer');
console.log(clientUrl);

answered Nov 21, 2022 at 3:38

James Serengia

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