> Okay, as a practical matter it looks like we need to be able to
> support HTTP/1.0 in addition to HTTP/1.1, and "Content-Length" in
> addition to "Transfer-Encoding: chunked" whether sending or receiving.
>> This leads me to my next question: What is the transition sequence
> for the cases in which an HTTP/1.1 client that normally uses chunking
> wants to make a request of a server that is HTTP/1.0 and/or doesn't
> understand chunking?
There is no 'installed base' of IPP clients and servers which do not
support HTTP/1.1. As a practical matter, it seems unreasonable to
posit one or to create one.