Indeed, XML-RPC is surprisingly good protocol to this day. The only three non-unimportant issues with it are (a) verbose XML (which was common back then), (b) l

Indeed, XML-RPC is surprisingly good protocol to this day. The only three non-unimportant issues with it are (a) verbose XML (which was common back then), (b) lack of null/none/nil tag, and (c) lack of named arguments (very uncommon back then).