Get origin domain in NodeJS - Express

Question

I am trying to get the domain from the request in nodejs, the request originates from PHP and when I get origin in Nodejs I get undefined.

This is my code in PHP: (domain1.com)

    $curl = curl_init();

curl_setopt_array($curl, array(
  CURLOPT_URL => 'https://myNodedomain.com/sendAlert',
  CURLOPT_RETURNTRANSFER => true,
  CURLOPT_ENCODING => '',
  CURLOPT_MAXREDIRS => 10,
  CURLOPT_TIMEOUT => 0,
  CURLOPT_FOLLOWLOCATION => true,
  CURLOPT_HEADER => true,
  CURLOPT_HTTP_VERSION => CURL_HTTP_VERSION_1_1,
  CURLOPT_CUSTOMREQUEST => 'POST',
  CURLOPT_POSTFIELDS => array('token' => '3242342332'),
));

$response = curl_exec($curl);

curl_close($curl);
echo $response;

This is my code in NodeJs: (mynodedomain.com)

app.post('/sendAlert', async (req, res) => {
   console.log(req.get('host'));
   console.log(req.get('origin'));
});

The desired result is: https://domain1.com/

Any solution?

If the request is coming from a PHP script, there is no way to reliably associate a domain with that. That's just some random client somewhere at some IP address. That client could tell you what domain it was at by setting a referrer header on the request or you could try to do a reverse DNS lookup on its IP address and see if that IP address is associated with a particular domain, but neither of those is guaranteed to work and cannot be relied upon unless the requesting host is cooperating with you and can be trusted. — jfriend00
– jfriend00, Commented Jun 3, 2022 at 0:48
Your PHP code is not sending the origin header. Therefore it is not possible to get the origin domain due to how TCP/IP and HTTP works — slebetman
– slebetman, Commented Jun 3, 2022 at 3:01
Thanks for your answers, I'll implement it in another way instead of origin. — Alejandro
– Alejandro, Commented Jun 3, 2022 at 22:31

Zach Brogan · Accepted Answer · 2022-06-03 00:51:03Z

2

I'm not super familiar with PHP, but adding something like this might work:

curl_setopt($curl, CURLOPT_HTTPHEADER, ['Origin: domain1.com']);

edited Jun 3, 2022 at 0:51

answered Jun 3, 2022 at 0:50

Zach Brogan

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SwiftyJoeyy Over a year ago

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