http://example.com:[port]/web2/product/version
Such URL can be used to identify server
GET http://127.0.0.1:80/web2/product/version
The response is text/plain line like
Intellect 4.8.4
It means that the server supports the protocol described in this document. The line can change depending on the product version. This helps to distinguish 2 web servers with similar functionality but different protocols in different products.