I guess I consider it more important for the URL to describe the
end resource that it's providing, than for it to describe the
underlying protocol(s). We don't have tcp: or ip: URLs; we have
URLs for higher level services. Some URL schemes don't imply a
particular protocol. However, for every URL scheme that uses the
name of a protocol, the URL names the highest layer protocol
on the stack, rather than some lower layer.
Keith