2.4.3. Parsing the Network Location/Login

If the parse string begins with a double-slash "//", then the substring of characters after the double-slash and up to, but not including, the next slash "/" character is the network location/login (<net_loc>) of the URL. If no trailing slash "/" is present, the entire remaining parse string is assigned to <net_loc>. The double- slash and <net_loc> are removed from the parse string before continuing.