The Digital River REST Shopper API runs over HTTPS. HTTP is not supported. The "shoppers/me" in the URL represents the current shopper session and the calls that you—the developer—make on a shopper's behalf to allow the shopper to find and purchase products from an online store.
The version number, which is currently v1, must be included in the request URL. The HTTP version (1.1) is also appended to the request URL.