ASP - How to get URL of Referring Site

Question

This is an ASP question, not ASP.Net.

Assume there are two sites:

www.domain-1.com
www.domain-2.com

www.domain-1.com has a redirection URL in IIS that points to www.domain-2.com. In www.domain-2.com, I need to know the URL of the referring site (e.g. in this case, it would be www.domain-1.com). How is this done?

score 25 · Accepted Answer · answered Feb 18 '10 at 04:38

25

referer = Request.ServerVariables ("HTTP_REFERER")

answered Feb 18 '10 at 04:38

Alex

2,350
2
20
17

1

This doesn't seem to work when it's an IIS redirect. When it's coming from an href, it works fine, though. – StackOverflowNewbie Feb 18 '10 at 04:49
2

It is not 100% reliable. It is not always set by the users browser and some spyware/privacy apps can remove it from the get request as well. However, there is any easy solution to this problem if you have access to the redirect code. You can change it to include a query string variable with the source host so www.domain-1.com redirects the user to www.domain-2.com/?source=www.domain-1.com – Alex Feb 18 '10 at 05:02
it work perfectly when the page is called by an element, but the variable is empty when called by a rediect or when the page is called directly from the url. – Andrea_86 Oct 23 '15 at 07:35

ASP - How to get URL of Referring Site

1 Answers1

Linked