Http Header "Referrer"

[mack81]

Does anyone know if it is possible to force a client browser (from jsp code) to send to the server the http header "referrer"?I have a strange problem with my site: some clients send it, but others don't and the server crushes in the latter case.Anybody know anything about it?

[feti]

Don't rely on any headers sent by the client. They can easily be modified in browsers such as Opera. Also, the browser must send it, which means anybody could write a small hack that sends the data you're expecting, and retrieve sensitive information, if you allow them to.

So the answer to your question is no, it's browser/client-based.