如何从我的服务器获取 img 请求的网站域名？

Question

I have a pixel, which can be placed at any site. Looks like this:

<a href="https://myhost.site"><img src="https://myhost.site/img"/></a>

I'm working with express and node, try to get domain name which requested this img. Code looks like this:

req.get('origin')

But it gives me undefined . From chrome dev tools in network tab I really see that this request doesn't have an origin header. It looks strange to me. Is there a way to get domain name from this get img request?

I can't use JS . I have to assume user switched off js in browser.

Answer 1

Instead of req.get('origin') access headers property like req.headers.origin . `