Document https://tools.ietf.org/html/rfc6266 updates document https://www.w3.org/Protocols/rfc2616/rfc2616-sec19.html . Between these
two there is slight but important difference regarding how parameter values are formatted. In RFC6266 parameters values are without quotes and
in RFC2616 they are quoted. Since common practice among http servers is to understand quoted values, we use older document
as reference here.